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On line Solution of Monovariate Equation：
Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
It supports equations that contain mathematical functions.
Input any unary equation directly, and then click the "Next" button to obtain the solution of the equation.
It supports equations that contain mathematical functions.
Current location：Equations > Monovariate Equation > The history of univariate equation calculation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation (0.01+a)/(0.01-0.2a+a2） = 2.98 .
Question type: Equation
Solution:Original question:
| ( | 1 100 | + | a | ) | ÷ | ( | 1 100 | − | 1 5 | a | + | a | × | 2 | ) | = | 149 50 |
| Multiply both sides of the equation by: | ( | 1 100 | − | 1 5 | a | + | a | × | 2 | ) |
| ( | 1 100 | + | a | ) | = | 149 50 | ( | 1 100 | − | 1 5 | a | + | a | × | 2 | ) |
1 100 | + | a | = | 149 50 | ( | 1 100 | − | 1 5 | a | + | a | × | 2 | ) |
1 100 | + | a | = | 149 50 | × | 1 100 | − | 149 50 | × | 1 5 | a | + | 149 50 | a | × | 2 |
1 100 | + | a | = | 149 5000 | − | 149 250 | a | + | 149 25 | a |
1 100 | + | a | = | 149 5000 | + | 1341 250 | a |
Transposition :
| a | − | 1341 250 | a | = | 149 5000 | − | 1 100 |
Combine the items on the left of the equation:
| - | 1091 250 | a | = | 149 5000 | − | 1 100 |
Combine the items on the right of the equation:
| - | 1091 250 | a | = | 99 5000 |
By shifting the terms and changing the symbols on toth sides of the equation, we obtain :
| - | 99 5000 | = | 1091 250 | a |
If the left side of the equation is equal to the right side, then the right side must also be equal to the left side, that is :
1091 250 | a | = | - | 99 5000 |
The coefficient of the unknown number is reduced to 1 :
| a | = | - | 99 5000 | ÷ | 1091 250 |
| = | - | 99 5000 | × | 250 1091 |
| = | - | 99 20 | × | 1 1091 |
We obtained :
| a | = | - | 99 21820 |
Convert the result to decimal form :
| a | = | - 0.004537 |