Consider the following system of equations.
4x+ay = −2
2x+by−3z= 3
5x+cy−2z= 0
And let
A =
4 a 0
2 b −3
5 c −2
Suppose that det(A) = 2. Use Cramer's rule to solve the above system for the variable y.
Consider the following system of equations.?
2015-12-08 8:55 am
回答 (1)
2015-12-08 12:30 pm
✔ 最佳答案
Δy =| 4 -2 0 |
| 2 3 -3 |
| 5 0 -2 |
= 4*[ 3*(-2) ] - (-2)*[ 2*(-2) - (-3)*5 ]
= - 24 + 2*11
= - 2
y
= Δy / det(A)
= - 2 / 2
= - 1
Ans: y = - 1
收錄日期: 2021-05-02 14:09:17
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