SOLUTION: Please help me find A⁻¹ for A =(see row) and use A⁻¹ to solve the system. Thanks!
Row & system: https://s28.postimg.org/huda2y2b1/image.png
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Question 1078725: Please help me find A⁻¹ for A =(see row) and use A⁻¹ to solve the system. Thanks!
Row & system: https://s28.postimg.org/huda2y2b1/image.png
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
Entering the 3 x 3 equations into a matrix (A)
then enter the constants into a 3 x 1 matrix (B)
Enter A and press x^-1 to invert it. Then enter B. Multiply them
A^(-1)B will give a 3 x 1 matrix which is the answer.
-2
3
1
for x , y, z
(-2, 3, -1)
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