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Home > What's new calculators
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Educational Level
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Secondary school, High school and College |
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Program Purpose
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Provide step by step solutions of your problems using online calculators (online solvers)
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Problem Source
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Your textbook, etc |
1. Ciphers on 19.04.2026
1. Alberti Cipher
2. Double Transposition Cipher
3. Enigma machine Cipher
4. Four Square Cipher
5. Gronsfeld Cipher
6. Hill Cipher
7. Kamasutra Cipher | Vatsyayana Cipher
8. Multiplicative Cipher | Decimation Cipher
9. Morse Code Translator
10. Playfair Cipher
11. Porta Cipher
12. Three Square Cipher
13. Two-square Cipher
2. Ciphers on 08.04.2026
1. A1Z26 Cipher (Letter to number Cipher)
2. ADFGVX Cipher
3. ADFGX Cipher
4. Affine Cipher
5. Atbash Cipher
6. Autokey Cipher / Autoclave Cipher
7. Bacon Cipher
8. Beaufort Cipher
9. Bifid Cipher
10. Caesar Cipher
11. Chaocipher
12. Columnar transposition Cipher
13. Nihilist Cipher
14. Polybius Square Cipher
15. Rail fence Cipher
16. ROT-5 Cipher
17. ROT-13 Cipher
18. ROT-18 Cipher
19. ROT-47 Cipher
20. ROT-N Cipher
21. Running Key Cipher
22. Substitution Cipher
23. Tap code Cipher | Knock code Cipher
24. Trifid Cipher
25. Trithemius Cipher
26. Vigenere Cipher
3. Numerical Integration on 24.03.2026
1. Left Riemann Sum for a table
2. Right Riemann Sum for a table
3. Midpoint Rule for a table
4. Left endpoint approximation for a table
5. Right endpoint approximation for a table
1. Left Riemann Sum for a function
2. Right Riemann Sum for a function
3. Midpoint Rule for a function
4. Left endpoint approximation for a function
5. Right endpoint approximation for a function
4. Missing Operators solver on 20.02.2026
5.1 Increasing and decreasing functions at point on 18.02.2026
5.2 Increasing and decreasing intervals of a function
6.1 Local maxima and minima of a function using second derivative test on 17.02.2026
6.2 Local maxima and minima of a function using first derivative test
7. Polar to Rectangular form of complex number on 16.02.2026
8. Solve (2nd order) numerical differential equation using on 04.02.2026
1. Improved Euler method / Modified Euler method
2. Midpoint Euler method
3. Taylor Series method
9. For angle `theta`, find values of all six trigonometric functions on 16.01.2026
10. Square root by Babylonian method on 10.01.2026
11. Cube root by Babylonian method
12. Assignment problem using LP Model Formulation on 07.01.2026
13. Transportation Problem using LP Model Formulation
14. Transshipment Problem on 05.01.2026
15. Fermat's Little Theorem on 29.12.2025
16. Raw Moments to Central Moments conversion (on 24.12.2025)
The first four moments of a distribution about the value 4 are 1,4,10,45. Calculate the first four moments about mean and origin
17. Raw Moments and Central Moments for grouped data on 23.12.2025
18. Raw Moments and Central Moments for ungrouped data
19. Thomas algorithm method on 12.11.2025
20. Inverse Power Method for dominant eigenvalue on 11.11.2025
21. Verify polynomial is divided by another polynomial or not on 06.10.2025
22. Determinant by gaussian elimination on 05.08.2025
23. Determinant by Expanding along row / column
24. Determinants using montante (bareiss algorithm)
25. Determinant using Leibniz formula
26. Complex Number on 10.06.2025
1. Adding complex numbers
2. Subtracting complex numbers
3. Multiplying complex numbers
4. Dividing complex numbers
5. Real part of complex number
6. Imaginary part of complex number
7. Conjugate of complex number
8. Modulus / Magnitude / Absolute value of complex numbers
9. Multiplicative inverse of complex numbers
10. Reciprocal of complex number
11. Argument / Arg / Angle / Phase of complex number
12. Polar form of complex number
13. Exponential form of complex number
14. Square root of complex number
15. Cube root of complex number
16. Powers of complex numbers
17. Roots of complex numbers
27. Polynomial on 28.05.2025
1. Identify the like terms in algebraic expression
2. Classify polynomial as monomials, binomials, trinomials, or other polynomial
3. Classify polynomial as linear, quadratic and cubic polynomials
28. Random number calculator on 05.05.2025
1. Random number generator
2. Random string generator
3. Random password generator
4. Random list generator
5. Roll dice
6. Flip coin toss
7. Random card shuffle
8. Random binary number generator
9. Random octal number generator
10. Random hex number generator
11. Random n digit number generator
29. HCF LCM calculator on 03.05.2025
1. HCF of decimal numbers
2. LCM of decimal numbers
3. HCF of fractions
4. LCM of fractions
30. Standard form calculator on 02.05.2025
1. Standard form of a number
2. Standard form of rational number
3. Standard form of linear equations in one variable
4. Standard form of linear equations in two variables
5. Standard form of linear equations (any variables)
6. Standard form of quadratic equation
7. Standard form of cubic polynomial
8. Standard form of polynomial
31. Logarithm on 15.04.2025
1. Convert from exponential to logarithmic form
2. Convert from logarithmic to exponential form
32. Angles on 26.02.2025
1. Complementary angle
2. Supplementary angle
3. Reference angle
4. Decide Types of angles based on measurement (Right angle, Acute angle, Obtuse angle)
5. Quadrant of angle
33. Decimal number on 18.11.2024
1.1 Decimal to Fraction
1.2 Fraction to Decimal
1.3 Decimal to Percentage
1.4 Percentage to Decimal
1.5 Decimal to Standard form
1.6 Standard form to Decimal form
2. Expanded form of a number
3. Succeeding number
4. Preceding number
5. Even or odd number
6. Comparing Numbers (Greater Than Or Less Than)
7. Minimum number
8. Maximum number
9. Ascending, Descending order of numbers
10. Rounding Numbers
11. Classifying numbers (Rational,Irrational,Real,Natural,Integer)
12. Terminating or non terminating decimal expansion
13. Additive inverse
14. Multiplicative inverse
15. Opposite number
16. Reciprocal number
17. Absolute value of a number
18. Plotting numbers on a number line
19. Like and Unlike decimals
20. Convert unlike decimals to like decimals
21. +, -, *, / of numbers
22. Model +, - of numbers
23. Simplify expression
34. Rational Zeros Theorem to find all possible rational roots of a polynomial on 04.10.2024
35. Scientific notation on 16.08.2024
1. Convert Scientific notation to Decimal notation
2. Convert Decimal notation to Scientific notation
3. Add, subtract, multiply and divide of Scientific notation numbers
36. Fraction on 05.08.2024
1. Numerator and Denominator Fractions
2. Proper and Improper Fractions
3. Like and Unlike fractions
4. Model Fractions (Visual Fractions)
5. Simplify Fraction
6. Equivalent Fractions
7. How many eighths are equivalent to 1/2
8. Fraction to Decimal (Mixed Number to Decimal)
9. Decimal to Fraction (Decimal to Mixed Number)
10. Fraction to Percentage (Mixed Number to Percentage)
11. Percent to Fraction
12. Improper fraction to Mixed number
13. Mixed Number to Improper Fraction
14. Reciprocal of a fraction
15. LCD of fractions
16. Convert unlike fraction to like fraction
17. Comparing fractions
18. Ascending and descending order of fractions
19. Add, subtract, multiply and divide of Fractions
20. Add, subtract, multiply and divide of Mixed numbers
21. Visual Model for Adding, Subtracting of Fractions
22. Simplify fraction expression
37. Prime numbers on 26.06.2024
37.1 Is 31 a prime number
37.2 Which of the following is a prime number 13,48,49,23,45,47
37.3 Which of the following is a composite number 13,19,22,31
37.4 First 1000 prime numbers
37.5 5th prime number
37.6 Prime numbers from 1 to 1000
37.7 Greatest prime number between 1 and 100
37.8 What is the next 2 prime number after 37
37.9 What is the previous 2 prime number before 37
37.10 What is the largest 2 digit prime number
37.11 What is the smallest 4 digit prime number
37.12 Express 21 as the sum of three prime numbers
37.13 are 25 and 27 co-prime numbers
37.14 Find all co-prime numbers from 1 to 100
37.15 are 11 and 13 twin primes
37.16 Find all twin prime numbers between 1 to 100
38. Multiples of a number on 26.06.2024
38.1 Find Multiple of 8 using Multiplication method
38.2 Find Multiple of 8 using Repeated addition method
38.3 Find the first 6 Multiple of 8
38.4 Find the sum of first 12 Multiple of 12
38.5 Find the average of first 12 Multiple of 12
38.6 Find Multiple of 7 that are less than or equal to 56
38.7 Find Multiple of 12 that are between 20 and 70
38.8 Find the smallest Multiple of 13 greater than 1000
38.9 Find the largest Multiple of 7 less than 1000
38.10 How many Multiple of 7 between 100 and 1000
38.11 Is 104 a multiple of 8
39. Factors and Prime factors of a number on 11.06.2024
39.1 Prime factorization by Division method
39.2 Prime factorization using Factor tree method
39.3 Prime factorization using the Ladder method
39.4 Factors by Division method
39.5 Factors by Multiplication method
39.6 Factor Pairs
40. HCF and LCM of numbers on 24.05.2024
40.1 HCF by Listing Method
40.2 HCF by Prime Factorization Method
40.3 HCF by Division Method
40.4 HCF by Repeated Division Method
40.5 LCM by Listing Method
40.6 LCM by Prime Factorization Method
40.7 LCM by Division Method
40.8 LCD
40.9 Common Factor by Listing Method
41.1 Log | Logarithm on 28.04.2024
41.2 ln - Natural log
41.3 Antilog | Antilogarithm
41.4 Anti Natural log
42. The Equation for the terminal Side `theta` is `2x+y=0, x>=0`. Find the value of all six trigonometric functions on 25.04.2024
43. Net Present Value (NPV) on 19.03.2024
44. Amortization on 14.03.2024
45.1 Future value using Simple Interest on 05.03.2024
45.2 Future value using Compound Interest
45.3 Future value of Annuity
45.4 Future value of Annuity Due
45.5 Present value using Simple Interest
45.6 Present value using Compound Interest
45.7 Present value of Annuity
45.8 Present value of Annuity Due
45.9 Contineous Compounding
46.1 Future value factor
46.2 Present value factor
46.3 Discount factor
46.4 Future value factor table
46.5 Present value factor table
46.6 Discount factor table
47.1 Effective interest rate
47.2 Nominal interest rate
48.1 Simple bar graph on 26.02.2024
48.2 Multiple bar graph
48.3 Percentage bar graph
48.4 Simple stacked bar chart
48.5 Percentage stacked bar chart
48.6 Pie Chart
48.7 Donut Chart
48.8 Scatter Plot | XY Graph
48.9 Line Graph
49.1 Ogive (cumulative frequency curve) on 25.01.2024
49.2 Frequency polygon with the help of Histogram
49.3 Frequency curve with the help of Histogram
50. Queueing Theory on 06.01.2024
50.1 M/M/1 Queuing Model
50.1 M/M/1/N Queuing Model (M/M/1/K)
50.1 M/M/1/N/N Queuing Model (M/M/1/K/K)
50.2 M/M/s Queuing Model (M/M/c)
50.2 M/M/s/N Queuing Model (M/M/c/K)
50.2 M/M/s/N/N Queuing Model (M/M/c/K/K)
50.2 M/M/Infinity Queuing Model
51. Binomial expansion `(2x+3y)^5` on 26.09.2023
52. Words to Numbers Converter on 24.09.2023
53. Oddment method on 29.07.2023
54. Index Number on 16.07.2023
1.1 Fixed base method
1.2 Chain base method
2. Unweighted Index Number
2.1 Simple Aggregative Method
2.2 Simple Average of Price Relative Method (using the arithmetic mean)
2.3 Simple Average of Price Relative Method (using the geometric mean)
3.1 Fixed base method for bivariate grouped data
3.2 Chain base method for bivariate grouped data
4.1 Conversion of fixed base index numbers into chain base index numbers
4.2 Conversion of chain base index numbers into fixed base index numbers
5. Weighted Index Numbers
5.1 Laspeyre's price index number
5.2 Paasche's price index number
5.3 Fisher's price index number
5.4 Marshall Edgeworth's price index number
5.5 Dorbish-Bowley's price index number
5.6 Kelly's price index number
5.7 Walsh's price index number
6.1 Weighted aggregate method
6.2 Weighted average of price relatives method
7. Cost of living Index number
7.1 Aggregate expenditure method
7.2 Family budget method
55. Mode using Grouping Method on 12.12.2022
56. Construct an ungrouped frequency distribution table on 28.11.2022
57. Construct a grouped frequency distribution table
58. Maximum, Minimum for ungrouped data
59. Sum, Length for ungrouped data
60. Range, Mid Range for ungrouped data
61. Stem and leaf plot for ungrouped data
62. Ascending order, Descending order for ungrouped data
63. Run Length Encoding on 21.11.2022
64. Run Length Decoding
65. Modulo on 15.11.2022
66. Fast modular exponentiation
67. Coding Decoding on 19.10.2022
68. Ridder's Method on 23.05.2022
69. Vector triple product on 13.04.2022
70. Law of Sines Calculator on 13.04.2022
71. Law of Cosines Calculator
72.1 Sine Calculator on 11.04.2022
72.2 Cosine Calculator
72.3 Tangent Calculator
72.4 Cosecant Calculator
72.5 Secant Calculator
72.6 Cotangent Calculator
73.1 Inverse Sine Calculator
73.2 Inverse Cosine Calculator
73.3 Inverse Tangent Calculator
73.4 Inverse Cosecant Calculator
73.5 Inverse Secant Calculator
73.6 Inverse Cotangent Calculator
74.1 Hyperbolic Sine Calculator
74.2 Hyperbolic Cosine Calculator
74.3 Hyperbolic Tangent Calculator
74.4 Hyperbolic Cosecant Calculator
74.5 Hyperbolic Secant Calculator
74.6 Hyperbolic Cotangent Calculator
75.1 Inverse Hyperbolic Sine Calculator
75.2 Inverse Hyperbolic Cosine Calculator
75.3 Inverse Hyperbolic Tangent Calculator
75.4 Inverse Hyperbolic Cosecant Calculator
75.5 Inverse Hyperbolic Secant Calculator
75.6 Inverse Hyperbolic Cotangent Calculator
76. If `x+y+z=1,xy+yz+zx=-1` and `xyz=-1` then find `x^3+y^3+z^3` on 25.02.2022
77. If `alpha` and `beta` are roots of equation `2x^2-3x-6=0`, then find `alpha^2+beta^2` on 29.01.2022
78. If `alpha` and `beta` are roots of equation `2x^2-3x-6=0`, then find equation whose roots are `alpha^2` and `beta^2`
79. Find value of `k` for which `2x^2+kx+2=0` has real roots
80. Wrong Number series on 06.01.2022
81. Missing Number Series
82. Alphabet series on 13.12.2021
83. Missing Letter Series
84. Richardson extrapolation formula for differentiation on 11.12.2021
85. Find other polynomial when one polynomial its GCD and LCM are given
86. Lattice Multiplication on 08.12.2021
87.1 Missing Digits solver, fill in the blank solver on 06.11.2025
87.2 Alphametic Puzzles, Algebrograms, Cryptarithms, Cryptograms solver on 02.12.2021
88. Restoring Division Algorithm For Unsigned Integer on 29.11.2021
89. Non-Restoring Division Algorithm For Unsigned Integer on 01.12.2021
90 Solve (2nd order) numerical differential equation using (on 17.10.2021)
1. Euler method
2. Runge-Kutta 2 method
3. Runge-Kutta 3 method
4. Runge-Kutta 4 method
91.1 Find the value of h,k for which the system of equations has a Unique solution on 16.10.2021
91.2 Find the value of h,k for which the system of equations has Infinite solution
91.3 Find the value of h,k for which the system of equations has No solution
91.4 Find the value of h,k for which the system of equations is consistent
91.5 Find the value of h,k for which the system of equations is inconsistent
91.6 Determine whether the system of linear equations has a Unique solution
91.7 Determine whether the system of linear equations has Infinite solution
91.8 Determine whether the system of linear equations has No solution
91.9 Determine whether the system of linear equations is consistent
91.10 Determine whether the system of linear equations is inconsistent
92. Chinese Remainder Theorem on 08.08.2021
93. Extended Euclidean Algorithm
94. Euclid's Algorithm
95. Modular multiplicative inverse
96. Remainder theorem on 04.08.2021
97. Singular Value Decomposition (SVD) Code improved on 29.07.2021
98. Numerical Differentiation first order and second order using on 14.07.2021
1. 2 point Forward, Backward, Central difference formula
2. 3 point Forward, Backward, Central difference formula
3. 4 point Forward, Backward, Central difference formula
4. 5 point Forward, Central difference formula
99. Time Series and Forecasting on 07.07.2021
1. Simple Moving Average
2. Weighted Moving Average
3. Single Exponential Smoothing
4. Simple Moving Average forecast
5. Weighted Moving Average forecast
6. Single Exponential Smoothing forecast
100. Cubic spline interpolation on 28.06.2021
101. Missing terms in interpolation table on 27.05.2021
102. Lagrange's Inverse Interpolation formula on 24.05.2021
103. on 11.05.2021
1. LU decomposition using Doolittle's method of Matrix
2. LU decomposition using Crout's method of Matrix
3. Solve systems of linear equations using Doolittle's method
4. Solve systems of linear equations using Crout's method
104. Statistical Methods on 09.04.2021
1. Five number summary for ungrouped data
2. Box and Whisker Plots for ungrouped data
3. Five number summary for grouped data
4. Box and Whisker Plots for grouped data
105. Verifying if two functions are inverses of each other on 03.04.2021
106. Polynomial on 13.03.2021
1. Polynomial in ascending order
2. Polynomial in descending order
3. Degree of a polynomial
4. Leading term of a polynomial
5. Leading coefficient of a polynomial
6. Determine expression is a polynomial or not
7. Zeros of a polynomial
107. is Negative Definite Matrix on 28.02.2021
108. Row Space on 13.02.2021
109. Column Space
110. Null Space
111. Percentage on 06.02.2021
112. Arithmetic Progression
113. Geometric Progression
114. Simple Interest
115. Compound Interest
116. Relaxation method on 22.01.2021
117. Karnaugh Map method (Kmap) on 21.01.2021
118. Quine-McCluskey method
119. Halley's Method on 11.01.2021
120. Steffensen's Method
121. is Derogatory Matrix on 03.11.2020
122. Functions on 30.07.2020
1. Domain of a function
2. Range of a function
3. Inverse of a function
4. Properties of a function
5. Vertex of a function
6. Focus of a function
7. axis symmetry of a parabola
8. Directrix of a function
9. Intercept of a function
10. Parity of a function
11. Asymptotes of a function
123. on 26.07.2020
1. solve equation `3/y+14/x=5,21/x-1/y=2` by taking `1/x=X` and `1/y=Y`
2. solve equation `3x+14y=5xy,21y-x=2xy` by dividing `xy`
124. on 09.07.2020
1. Taylor Series method
2. cuberoot(48) using iteration method
125. Numerical Interpolation using on 06.07.2020
11. Hermite's formula
126. Numerical Interpolation using on 24.06.2020
6. Gauss Forward formula
7. Gauss Backward formula
8. Stirling's formula
9. Bessel's formula
10. Everett's formula
127. Numerical Differentiation using on 24.06.2020
4. Newton's Divided Difference formula
5. Lagrange's formula
6. Stirling's formula
7. Bessel's formula
128. Numerical Integration using on 24.06.2020
4. Boole's Rule
5. Weddle's Rule
129. Sequencing Problems - Processing 2 Jobs Through m Machines Problem on 17.04.20
130. SOR (Successive over-relaxation) method on 11.04.20
131. For P(3,4), find the value of all six trigonometric functions on 29.03.20
132. Bairstow method on 03.03.20
133. 3 Missing frequencies when Mean or Median or mode are given on 31.01.2020
134. fog(x)=(x+2)/(3x), f(x)=x-2. Find g(x)
135. gof(x)=1/x^2, f(x)=2+x^2. Find g(x).
136. Data envelopment analysis (DEA method) on 05.01.2020
137. Determinants using Sarrus Rule on 23.10.19
138. Determinants using properties of determinants
139. Hyperbolic functions implemented on 26.09.19
140. Five number summary
141. diagonally dominant equation
142. set builder notation (Code improved) on 19.09.19
143. stem and leaf plot
144. Partial Fraction bug solved on 13.09.19
145. PERT and CPM Network diagram (improved) on 26.08.19
145. BCD and Excess 3 Addition and Subtraction using 9's or 10's complement Method on 22.08.19
1. BCD Addition
2. BCD Subtraction using 9's complement
3. BCD Subtraction using 10's complement
4. Excess 3 Addition
5. Excess 3 Subtraction using 9's complement
6. Excess 3 Subtraction using 10's complement
147. Conversion on 22.08.19
1. Decimal To BCD
2. Binary To BCD
3. Octal To BCD
4. Hexadecimal To BCD
5. BCD To Decimal
6. BCD To Binary
7. BCD To Octal
8. BCD To Hexadecimal
9. BCD To Excess 3
10. Decimal To Excess 3
11. Binary To Excess 3
12. Octal To Excess 3
13. Hexadecimal To Excess 3
14. Excess 3 To Decimal
15. Excess 3 To Binary
16. Excess 3 To Octal
17. Excess 3 To Hexadecimal
18. Excess 3 To BCD
19. Decimal To Gray code
20. Binary To Gray code
21. Octal To Gray code
22. Hexadecimal To Gray code
23. Gray code To Decimal
24. Gray code To Binary
25. Gray code To Octal
26. Gray code To Hexadecimal
148. Logarithmic equations 07.08.19
Unitary Method (Chain Rule) 18.07.19
149. If 17 books cost Rs 306, what do 29 books cost?
150. If 5 artical cost Rs 90, the cost of 9 artical is?
151. If 20 persons can do a piece of work in 7 days, then the number of persons required to complete the work in 28 days is?
152. If 5 men working 6 hours a day can reap a field in 20 days, in how many days will 15 men reap the field, working 8 hours a day?
Probability 17.07.19
153. 3 unbiased coins are tossed, What is the probability of getting exactly 2 tails
154. In a throw of two dice, What is the probability getting a total of 10 or 11
155. two card is drawn at random from a pack of 52 cards. What is the probability that the drawn cards are both aces
156. A bag contains 5 blue and 4 black balls. Three balls are drawn at random, what is the probability that 2 are blue and 1 is black?
Age word problems 16.07.19
157. 10 years ago, A was 4 times as old as B. 10 years hence, A will be 2 times as old as B. At present, A's age and B's age is ?
158. The ratio of Meena's age and Kamla's age is 3 : 5 and the sum of Meena's age and Kamla's ages is 80 years. The ratio of their ages after 10 years will be ?
Quadratic equations (Solution by considering m) on 10.07.19
159. `(x^2+1/x^2)-8(x+1/x)+14=0`
160. `4((4x+1)/(4x-1))^(2)+(4x+1)/(4x-1)=3`
161. `12((x)/(x-1))+12((x-1)/(x))=25`
162. Vector Algebra on 08.07.19
1. Addition/Subtraction of two vectors
2. Scalar Multiplication of vectors
3. Dot Product of two vectors
4. Cross Product of two vectors
5. Magnitude(length) of a vector
6. Unit vector
7. Direction cosines of a vector
8. Component form of a vector given two points
9. Angle between two vectors
10. Vector projections of B onto A
11. Orthogonal vectors
12. Collinear vectors
13. Coplanar vectors
14. Scalar triple product
15. Area of triangle determined by two vectors
16. Area of parallelogram determined by two vectors
17. Volume of pyramid determined by vectors
18. Volume of Parallelepiped determined by vectors
19. Decomposition of vector in basis
20. Linearly dependent and linearly independent vectors
163. Normal Distribution Table
164. t Distribution Table
165. Chi square Distribution Table
166. F Distribution Table
167. Binomial Distribution Table
168. F test
169. t-test
170. Standard error
171. Sign test
172. Mann whitney U test
173. Kruskal-wallis test
174. Chi square test
175. Median test
176. Mood's Median test
177. Cholesky decomposition method of a System of linear equations on 06.06.19
178. Covariance - Population Covariance, Sample Covariance for bivariate grouped data on 03.06.19
179. Covariance - Population Covariance, Sample Covariance for bivariate grouped data on 03.06.19
180. LU decomposition method / Crout's method of a System of linear equations on 30.05.19
181. One-way ANOVA on 09.05.19
182. Two-way ANOVA on 09.05.19
183. Power Method for dominant eigenvalue on 28.04.19
184. Partial Fraction on 19.04.19
185. Find roots of non-linear equations using Modified Newton Raphson method (Multivariate Newton Raphson method) on 19.04.19
186. Solve linear equations using Elimination method on 19.04.19
187. Maximize Profit case in transportation problem on 07.04.19
188. Revised Simplex method on 26.03.19
189. Moore-Penrose Pseudoinverse on 22.03.19
190. Geometric mean, Harmonic mean for ungrouped data on 21.03.19
191. Geometric mean, Harmonic mean for grouped data on 21.03.19
192. LQ Decomposition on 20.03.19
193. Muller method on 20.03.19
194. Matrix Algebra on 17.03.19
1. Matrix Algebra with variables
`[[2x,3y],[3x,4z]]`
2. Matrix Algebra with complex numbers
`[[-5i,3i],[4i,5i]]`
3. Matrix Algebra with surds
`[[1/sqrt(2),sqrt(2)],[4,-5]]`
195. PERT and CPM on 10.03.19
1. Network diagram
1. Activity, Predecessors
2. Activity i-j
3. Activity i-j, Name of Activity
2. Critical path, Total float, Free float, Independent float
1. Activity, Predecessors, Duration
2. Activity i-j, Duration
3. Activity i-j, Name of Activity, Duration
3. Project scheduling with uncertain activity times (Optimistic, Most likely, Pessimistic)
1. Activity, Predecessors, to, tm, tp
2. Activity i-j, to, tm, tp
3. Activity i-j, Name of Activity, to, tm, tp
4. Project crashing to solve Time-Cost Trade-Off with fixed Indirect cost
1. Activity, Predecessors, Normal Time & Cost, Crash Time & Cost and Indirect Cost
2. Activity i-j, Normal Time & Cost, Crash Time & Cost and Indirect Cost
3. Activity i-j, Name of Activity, Normal Time & Cost, Crash Time & Cost and Indirect Cost
5. Project crashing to solve Time-Cost Trade-Off with varying Indirect cost
1. Activity, Predecessors, Normal Time & Cost, Crash Time & Cost and varying Indirect Cost
2. Activity i-j, Normal Time & Cost, Crash Time & Cost and varying Indirect Cost
3. Activity i-j, Name of Activity, Normal Time & Cost, Crash Time & Cost and varying Indirect Cost
196. Transportation Problem
1. Heuristic method-1 on 07.01.19
2. Heuristic method-2 on 07.01.19
3. Row minima method on 24.12.18
4. Column minima method on 24.12.18
5. Russell's approximation method on 24.12.18
197. class and their frequency table on 31.12.18
198. less than or more than type cumulative frequency table on 31.12.18
199. Ratio and Proportion on 02.12.18
200. Synthetic division on 12.11.18
201. Singular Value Decomposition (SVD) on 04.11.18
202. All problem solution using search box on 05.10.18
203. Share solution on facebook, twitter with your friends on 17.08.18
204. Matrix Structure on 24.07.18
205. Algorithm, Formulas, Examples added at respective pages on 20.07.18
206. Simplex method Algorithm and examples on 08.07.18
207. Statistical Methods on 30.03.18
1. Permutation & combination
1. Find `n!`
2. Find `(n!)/(m!)`
3. Find `{::}^nP_r`
4. Find `{::}^nC_r`
5. How many words can be formed from the letters of the word daughter?
6. How many ways a committee of players can be formed ?
7. Permutation, Combination List
2. Probability
1. Coin
2. Dice
3. Cards
4. Balls
208. Calculus
1. Trigonometry on 20.03.18
1. Simplifying trigonometric equations, proving identities,
eg. (1) `sin(30)*cos(60)+sin(30)*cos(60)`, (2) `tan(x)+cot(x)`, (3) `tan^2(x)-sin^2(x)`, (4) `csc(x)/cos(x)-cos(x)/sin(x)`
2.1 If `sin(x)=5/13` then Find the value of other five trigonometric functions
2.2 If `sin(x)=3/5` then solve expression `cos(x)csc(x)+tan(x)sec(x)`
2. Derivative on 20.03.18
1. Find Derivative,
eg. (1) `d/(dx)(2x^(3)-2x^(2)-5x+4)`, (2) `d/(dx)(log(x)e^(x))`, (3) `d/(dx)(3cos(sin(x)))`
209. About us
210. Algebra
1. Functions
2. Set Theory (using builder form)
3. Interval notation and set builder notation
211. Word Problems
1. Age word problems
2. Unitary Method (Chain Rule)
212. Simplex method
1. Branch and Bound method
2. 0-1 Integer programming problem
213. Game Theory
1. Bimatrix method
214. Matrix operations
1. Cholesky Decomposition
2. QR Decomposition (Gram Schmidt Method)
3. QR Decomposition (Householder Method)
215. Solve numerical differential equation using
1. Adams bashforth predictor method
2. Milne's simpson predictor corrector method
216. Coordinate Geometry
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