Overview: 3 questions will be solved this time.Among them
☆3 equations
[ 1/3 Equation]
Work: Find the solution of equation x1-2x2+6x3 = 0 .
Question type: Equation
Solution:Original question:| | x | × | 1 | − | 2 | x | × | 2 | + | 6 | x | × | 3 | = | 0 |
| Left side of the equation = | x | × | 1 | − | 4 | x | + | 18 | x |
The equation is transformed into :
The coefficient of the unknown number is reduced to 1 :
We obtained :
This is the solution of the equation.
[ 2/3 Equation]
Work: Find the solution of equation 2x3 = 0 .
Question type: Equation
Solution:Original question:| Left side of the equation = | 6 | x |
The equation is transformed into :
The coefficient of the unknown number is reduced to 1 :
We obtained :
This is the solution of the equation.
[ 3/3 Equation]
Work: Find the solution of equation -2x1+4x2+12x3 = 0 .
Question type: Equation
Solution:Original question:| | - | 2 | x | × | 1 | + | 4 | x | × | 2 | + | 12 | x | × | 3 | = | 0 |
| Left side of the equation = | - | 2 | x | + | 8 | x | + | 36 | x |
The equation is transformed into :
The coefficient of the unknown number is reduced to 1 :
We obtained :
This is the solution of the equation.
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