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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 0.5 = -0.1279x2-0.1204x+0.8418 .
Question type: Equation
Solution:Original question:
1 2 | = | - | 1279 10000 | x | × | 2 | − | 301 2500 | x | + | 4209 5000 |
| Right side of the equation = | - | 1279 5000 | x | − | 301 2500 | x | + | 4209 5000 |
| = | - | 1881 5000 | x | + | 4209 5000 |
1 2 | = | - | 1881 5000 | x | + | 4209 5000 |
Transposition :
1881 5000 | x | = | 4209 5000 | − | 1 2 |
Combine the items on the right of the equation:
1881 5000 | x | = | 1709 5000 |
The coefficient of the unknown number is reduced to 1 :
| x | = | 1709 5000 | ÷ | 1881 5000 |
| = | 1709 5000 | × | 5000 1881 |
| = | 1709 | × | 1 1881 |
We obtained :
| x | = | 1709 1881 |
Convert the result to decimal form :
| x | = | 0.908559 |