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Educational Level
Secondary school, High school and College
Program Purpose
Provide step by step solutions of your problems using online calculators (online solvers)
Problem Source
Your textbook, etc

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12. BCD and Excess 3 Addition and Subtraction using 9's or 10's complement Method on 22.08.19
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13. Conversion on 22.08.19
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14. 07.08.19
Unitary Method 18.07.19
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Probability 17.07.19
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Problem on Ages 16.07.19
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Quadratic equations (Solution by considering m) on 10.07.19
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62. Matrix Algebra on 17.03.19
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`[[2x,3y],[3x,4z]]`
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`[[-5i,3i],[4i,5i]]`
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`[[1/sqrt(2),sqrt(2)],[4,-5]]`
63. PERT and CPM on 10.03.19
1. Network diagram
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2. Critical path, Total float, Free float, Independent float
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3. Project scheduling with uncertain activity times (Optimistic, Most likely, Pessimistic)
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4. Project crashing to solve Time-Cost Trade-Off with fixed Indirect cost
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5. Project crashing to solve Time-Cost Trade-Off with varying Indirect cost
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64. Transportation Problem
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70. All problem solution using search box on 05.10.18
71. Share solution on facebook, twitter with your friends on 17.08.18
72. on 24.07.18
73. Algorithm, Formulas, Examples added at respective pages on 20.07.18
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75. 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
76. 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 all the 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. Find maximum and minimum value of `y=x^3+6x^2-15x+7`
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79. Word Problems
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80. Simplex method
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81. Game Theory
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82. Matrix operations
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83. Solve numerical differential equation using
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