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1. Rule of Three on 23.09.2026
2.1 Partial derivative on 03.09.2026
2.2 Implicit differentiation
3. Negative Log / Negative Logarithm on 22.08.2026
4. Ciphers on 19.07.2026
1. Variant Beaufort Cipher
2. Keyed Caesar Cipher
3. AMSCO Cipher
5. 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 / Double Playfair Cipher
6. 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 / Additive cipher / Shift 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 / ROT Cipher
21. Running Key Cipher
22. Substitution Cipher / Monoalphabetic Substitution Cipher
23. Tap code Cipher / Knock code Cipher
24. Trifid Cipher
25. Trithemius Cipher
26. Vigenere Cipher
7. 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
8. Missing Operators solver on 20.02.2026
9.1 Increasing and decreasing functions at point on 18.02.2026
9.2 Increasing and decreasing intervals
10.1 Second derivative test for Local maxima and minima on 17.02.2026
10.2 First derivative test for Local maxima and minima
11. Polar to Rectangular form of complex number on 16.02.2026
12. 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
13. For angle `theta`, find values of all six trigonometric functions on 16.01.2026
14. Square root by Babylonian method on 10.01.2026
15. Cube root by Babylonian method
16. Assignment Problem using LP Model Formulation on 07.01.2026
17. Transportation Problem using LP Model Formulation
18. Transshipment Problem on 05.01.2026
19. Fermat's Little Theorem on 29.12.2025
20. 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
21. Raw Moments and Central Moments for grouped data on 23.12.2025
22. Raw Moments and Central Moments for ungrouped data
23. Thomas algorithm method on 12.11.2025
24. Inverse Power Method for dominant eigenvalue on 11.11.2025
25. Verify polynomial is divided by another polynomial or not on 06.10.2025
26. Determinant by gaussian elimination on 05.08.2025
27. Determinant by Expanding along row / column
28. Determinants using montante (bareiss algorithm)
29. Determinant using Leibniz formula
30. 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
31. 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
32. Random number 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
33. HCF LCM on 03.05.2025
1. HCF of decimal numbers
2. LCM of decimal numbers
3. HCF of fractions
4. LCM of fractions
34. Standard form 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
35. Logarithm on 15.04.2025
1. Convert from exponential to logarithmic form
2. Convert from logarithmic to exponential form
36. 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
37. Decimal number on 18.11.2024
1.1 Decimal to Fraction
1.2 Fraction to Decimal
1.3 Decimal to Percent
1.4 Percent to Decimal
1.5 Decimal to Standard form
1.6 Standard form to Decimal form
2. Expanded form of a number
3. Succeeding number / Successor
4. Preceding number / Predecessor
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
38. Rational Zeros Theorem to find all possible rational roots of a polynomial on 04.10.2024
39. Scientific notation on 16.08.2024
1. Convert Scientific notation to Decimal
2. Convert Decimal to Scientific notation
3. Add, subtract, multiply and divide of Scientific notation
40. Fraction on 05.08.2024
1. Numerator and Denominator Fractions
2. Classify Fractions (Proper and Improper Fractions)
3. Like and Unlike fractions
4. Model Fractions (Visual Fractions)
5. Reducing Fractions
6. Equivalent Fractions
7. How many eighths are equivalent to 1/2
8. Mixed Number to Decimal
9. Decimal to Mixed Number
10. Fraction to Percent (Mixed Number to Percent)
11. Percent to Fraction (Percent to Mixed Number)
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. Adding Fractions
20. Subtracting Fractions
21. Multiplying Fractions
22. Dividing Fractions
23. Add, subtract, multiply and divide of Mixed numbers
24. Visual Model for Adding, Subtracting of Fractions
25. Simplifying Complex Fractions
41. Prime numbers on 26.06.2024
41.1 Is 31 a prime number
41.2 Which of the following is a prime number 13,48,49,23,45,47
41.3 Which of the following is a composite number 13,19,22,31
41.4 First 1000 prime numbers
41.5 5th prime number
41.6 Prime numbers from 1 to 1000
41.7 Greatest prime number between 1 and 100
41.8 What is the next 2 prime number after 37
41.9 What is the previous 2 prime number before 37
41.10 What is the largest 2 digit prime number
41.11 What is the smallest 4 digit prime number
41.12 Express 21 as the sum of three prime numbers
41.13 are 25 and 27 co-prime numbers
41.14 Find all co-prime numbers from 1 to 100
41.15 are 11 and 13 twin primes
41.16 Find all twin prime numbers between 1 to 100
42. Multiples of a number on 26.06.2024
42.1 Find Multiple of 8 using Multiplication method
42.2 Find Multiple of 8 using Repeated addition method
42.3 Find the first 6 Multiple of 8
42.4 Find the sum of first 12 Multiple of 12
42.5 Find the average of first 12 Multiple of 12
42.6 Find Multiple of 7 that are less than or equal to 56
42.7 Find Multiple of 12 that are between 20 and 70
42.8 Find the smallest Multiple of 13 greater than 1000
42.9 Find the largest Multiple of 7 less than 1000
42.10 How many Multiple of 7 between 100 and 1000
42.11 Is 104 a multiple of 8
43. Factors and Prime factors of a number on 11.06.2024
43.1 Prime factorization by Division method
43.2 Prime factorization using Factor tree method
43.3 Prime factorization using the Ladder method
43.4 Factors by Division method
43.5 Factors by Multiplication method
43.6 Factor Pairs
44. HCF and LCM of numbers on 24.05.2024
44.1 HCF by Listing Method
44.2 HCF by Prime Factorization Method
44.3 HCF by Division Method
44.4 HCF by Repeated Division Method
44.5 LCM by Listing Method
44.6 LCM by Prime Factorization Method
44.7 LCM by Division Method
44.8 LCD
44.9 Common Factors by Listing Method
45.1 Log / Logarithm on 28.04.2024
45.2 ln - Natural log
45.3 Antilog / Antilogarithm
45.4 Anti Natural log
46. 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
47. Net Present Value (NPV) on 19.03.2024
48. Amortization on 14.03.2024
49.1 Future value using Simple Interest on 05.03.2024
49.2 Future value using Compound Interest
49.3 Future value of Annuity
49.4 Future value of Annuity Due
49.5 Present value using Simple Interest
49.6 Present value using Compound Interest
49.7 Present value of Annuity
49.8 Present value of Annuity Due
49.9 Contineous Compounding
50.1 Future value factor
50.2 Present value factor
50.3 Discount factor
50.4 Future value factor table
50.5 Present value factor table
50.6 Discount factor table
51.1 Effective interest rate
51.2 Nominal interest rate
52.1 Simple bar graph on 26.02.2024
52.2 Multiple bar graph
52.3 Percentage bar graph
52.4 Simple stacked bar chart
52.5 Percentage stacked bar chart
52.6 Pie Chart
52.7 Donut Chart
52.8 Scatter Plot / XY Graph
52.9 Line Graph
53.1 Ogive (cumulative frequency curve) on 25.01.2024
53.2 Frequency polygon with the help of Histogram
53.3 Frequency curve with the help of Histogram
54. Queueing Theory on 06.01.2024
54.1 M/M/1 Queuing Model
54.1 M/M/1/N Queuing Model (M/M/1/K)
54.1 M/M/1/N/N Queuing Model (M/M/1/K/K)
54.2 M/M/s Queuing Model (M/M/c)
54.2 M/M/s/N Queuing Model (M/M/c/K)
54.2 M/M/s/N/N Queuing Model (M/M/c/K/K)
54.2 M/M/Infinity Queuing Model
55. Binomial expansion `(2x+3y)^5` on 26.09.2023
56. Words to Numbers Converter on 24.09.2023
57. Oddment method on 29.07.2023
58. 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
59. Mode using Grouping Method on 12.12.2022
60. Construct an ungrouped frequency distribution table on 28.11.2022
61. Construct a grouped frequency distribution table
62. Maximum, Minimum for ungrouped data
63. Sum, Length for ungrouped data
64. Range, Mid Range for ungrouped data
65. Stem and leaf plot for ungrouped data
66. Ascending order, Descending order for ungrouped data
67. Run Length Encoding on 21.11.2022
68. Run Length Decoding
69. Modulo on 15.11.2022
70. Power Mod / Fast modular exponentiation
71. Coding Decoding on 19.10.2022
72. Ridder's Method on 23.05.2022
73. Vector triple product on 13.04.2022
74. Law of Sines Calculator on 13.04.2022
75. Law of Cosines Calculator
76.1 Sine Calculator on 11.04.2022
76.2 Cosine Calculator
76.3 Tangent Calculator
76.4 Cosecant Calculator
76.5 Secant Calculator
76.6 Cotangent Calculator
77.1 Inverse Sine Calculator
77.2 Inverse Cosine Calculator
77.3 Inverse Tangent Calculator
77.4 Inverse Cosecant Calculator
77.5 Inverse Secant Calculator
77.6 Inverse Cotangent Calculator
78.1 Hyperbolic Sine Calculator
78.2 Hyperbolic Cosine Calculator
78.3 Hyperbolic Tangent Calculator
78.4 Hyperbolic Cosecant Calculator
78.5 Hyperbolic Secant Calculator
78.6 Hyperbolic Cotangent Calculator
79.1 Inverse Hyperbolic Sine Calculator
79.2 Inverse Hyperbolic Cosine Calculator
79.3 Inverse Hyperbolic Tangent Calculator
79.4 Inverse Hyperbolic Cosecant Calculator
79.5 Inverse Hyperbolic Secant Calculator
79.6 Inverse Hyperbolic Cotangent Calculator
80. If `x+y+z=1,xy+yz+zx=-1` and `xyz=-1` then find `x^3+y^3+z^3` on 25.02.2022
81. If `alpha` and `beta` are roots of equation `2x^2-3x-6=0`, then find `alpha^2+beta^2` on 29.01.2022
82. If `alpha` and `beta` are roots of equation `2x^2-3x-6=0`, then find equation whose roots are `alpha^2` and `beta^2`
83. Find value of `k` for which `2x^2+kx+2=0` has real roots
84. Wrong Number series on 06.01.2022
85. Missing Number Series
86. Alphabet series on 13.12.2021
87. Missing Letter Series
88. Richardson extrapolation formula for differentiation on 11.12.2021
89. Find other polynomial when one polynomial its GCD and LCM are given
90. Lattice Multiplication on 08.12.2021
91.1 Missing Digits solver, fill in the blank solver on 06.11.2025
91.2 Alphametic Puzzles, Algebrograms, Cryptarithms, Cryptograms solver on 02.12.2021
92. Restoring Division Algorithm For Unsigned Integer on 29.11.2021
93. Non-Restoring Division Algorithm For Unsigned Integer on 01.12.2021
94 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
95.1 Find the value of h,k for which the system of equations has a Unique solution on 16.10.2021
95.2 Find the value of h,k for which the system of equations has Infinite solution
95.3 Find the value of h,k for which the system of equations has No solution
95.4 Find the value of h,k for which the system of equations is consistent
95.5 Find the value of h,k for which the system of equations is inconsistent
95.6 Determine whether the system of linear equations has a Unique solution
95.7 Determine whether the system of linear equations has Infinite solution
95.8 Determine whether the system of linear equations has No solution
95.9 Determine whether the system of linear equations is consistent
95.10 Determine whether the system of linear equations is inconsistent
96. Chinese Remainder Theorem on 08.08.2021
97. Extended Euclidean Algorithm
98. Euclid's Algorithm
99. Modular multiplicative inverse
100. Remainder theorem on 04.08.2021
101. Singular Value Decomposition (SVD) Code improved on 29.07.2021
102. 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
103. 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
104. Cubic spline interpolation on 28.06.2021
105. Missing terms in interpolation table on 27.05.2021
106. Lagrange's Inverse Interpolation formula on 24.05.2021
107. 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
108. Statistics 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
109. Verifying if two functions are inverses of each other on 03.04.2021
110. 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
111. is Negative Definite Matrix on 28.02.2021
112. Row Space on 13.02.2021
113. Column Space
114. Null Space
115. Percentage on 06.02.2021
116. Arithmetic Progression
117. Geometric Progression
118. Simple Interest
119. Compound Interest
120. Relaxation method on 22.01.2021
121. Karnaugh Map method (Kmap) on 21.01.2021
122. Quine-McCluskey method
123. Halley's Method on 11.01.2021
124. Steffensen's Method
125. is Derogatory Matrix on 03.11.2020
126. 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
127. 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`
128. on 09.07.2020
1. Taylor Series method
2. cuberoot(48) using iteration method
129. Numerical Interpolation using on 06.07.2020
11. Hermite's formula
130. 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
131. 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
132. Numerical Integration using on 24.06.2020
4. Boole's Rule
5. Weddle's Rule
133. Sequencing Problems - Processing 2 Jobs Through m Machines Problem on 17.04.20
134. SOR (Successive over-relaxation) method on 11.04.20
135. For P(3,4), find the value of all six trigonometric functions on 29.03.20
136. Bairstow method on 03.03.20
137. 3 Missing frequencies when Mean or Median or mode are given on 31.01.2020
138. fog(x)=(x+2)/(3x), f(x)=x-2. Find g(x)
139. gof(x)=1/x^2, f(x)=2+x^2. Find g(x).
140. Data envelopment analysis (DEA method) on 05.01.2020
141. Determinants using Sarrus Rule on 23.10.19
142. Determinants using properties of determinants
143. Hyperbolic functions implemented on 26.09.19
144. Five number summary
145. diagonally dominant equation
146. set builder notation (Code improved) on 19.09.19
147. Stem and leaf plot
148. Partial Fraction bug solved on 13.09.19
149. PERT and CPM Network diagram (improved) on 26.08.19
149. 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
151. 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
152. Logarithmic equations 07.08.19
Unitary Method (Chain Rule) 18.07.19
153. If 17 books cost Rs 306, what do 29 books cost?
154. If 5 artical cost Rs 90, the cost of 9 artical is?
155. 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?
156. 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
157. 3 unbiased coins are tossed, What is the probability of getting exactly 2 tails
158. In a throw of two dice, What is the probability getting a total of 10 or 11
159. two card is drawn at random from a pack of 52 cards. What is the probability that the drawn cards are both aces
160. 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
161. 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 ?
162. 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
163. `(x^2+1/x^2)-8(x+1/x)+14=0`
164. `4((4x+1)/(4x-1))^(2)+(4x+1)/(4x-1)=3`
165. `12((x)/(x-1))+12((x-1)/(x))=25`
166. 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 of a vector / 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 projection
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 independent or dependent vectors
167. Normal Distribution Table
168. t Distribution Table
169. Chi square Distribution Table
170. F Distribution Table
171. Binomial Distribution Table
172. F test
173. t-test
174. Standard error
175. Sign test
176. Mann whitney U test
177. Kruskal-wallis test
178. Chi square test
179. Median test
180. Mood's Median test
181. Cholesky decomposition method of a System of linear equations on 06.06.19
182. Covariance - Population Covariance, Sample Covariance for bivariate grouped data on 03.06.19
183. Covariance - Population Covariance, Sample Covariance for bivariate grouped data on 03.06.19
184. LU decomposition method / Crout's method of a System of linear equations on 30.05.19
185. One-way ANOVA on 09.05.19
186. Two-way ANOVA on 09.05.19
187. Power Method for dominant eigenvalue on 28.04.19
188. Partial Fraction on 19.04.19
189. Find roots of non-linear equations using Modified Newton Raphson method (Multivariate Newton Raphson method) on 19.04.19
190. Solve linear equations using Elimination method on 19.04.19
191. Maximize Profit case in Transportation problem on 07.04.19
192. Revised Simplex method on 26.03.19
193. Moore-Penrose Pseudoinverse on 22.03.19
194. Geometric mean, Harmonic mean for ungrouped data on 21.03.19
195. Geometric mean, Harmonic mean for grouped data on 21.03.19
196. LQ Decomposition on 20.03.19
197. Muller's method on 20.03.19
198. 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]]`
199. 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
200. 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
201. class and their frequency table on 31.12.18
202. less than or more than type cumulative frequency table on 31.12.18
203. Ratio and Proportion on 02.12.18
204. Synthetic division on 12.11.18
205. Singular Value Decomposition (SVD) on 04.11.18
206. All problem solution using search box on 05.10.18
207. Share solution on facebook, twitter with your friends on 17.08.18
208. Matrix Structure on 24.07.18
209. Algorithm, Formulas, Examples added at respective pages on 20.07.18
210. Simplex method Algorithm and examples on 08.07.18
211. Statistics 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
212. Calculus
1. Trigonometry on 20.03.18
1. Simplifying trigonometric expressions,
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)`
1.2 Proving trigonometric identities,
eg. (1) `sin(30)*cos(45)*tan(60)=sin(45)*cos(60)*cot(30)`, (2) `sin^2(50)+sin^2(40)=1`
2.1 If `sin(x)=5/13` then Find the values 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)))`
2. Second Derivative
3. Third Derivative
4. Fourth Derivative
5. nth Derivative / Higher order Derivative
6. Derivative at a Point
213. About us
214. Algebra
1. Functions
2. Set Theory (using builder form)
3. Interval notation and set builder notation
215. Word Problems
1. Age word problems
2. Unitary Method (Chain Rule)
216. Simplex method
1. Branch and Bound method
2. 0-1 Integer programming problem
217. Game Theory
1. Bimatrix method
218. Matrix operations
1. Cholesky Decomposition
2. QR Decomposition (Gram Schmidt Method)
3. QR Decomposition (Householder Method)
219. Solve numerical differential equation using
1. Adams bashforth predictor method
2. Milne's simpson predictor corrector method
220. Coordinate Geometry
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