r6ob5ertsalem
contestada

Please help me!!! ASAP!!
1. what is the solution of the matrix equation ?
[9 4] x= [-9 -6]
[2 1] [-1 -8]

A. [5 -26]
[9 -60]

B. [-5 26]
[-1 -8]

C. [-5 26]
[9 -60]

D. [9 26]
[9 1]


solve the system
{ 2x +y - 4z = -30
{ 3x + 2y +2z =-8
{5x + 5y + z = -26

A. (-30,-8,-26)
B.(4,-2,4)
C. (-4,-2,4)
D.(-4,2,-4)

Respuesta :

Ckaranja
C= [tex] \left[\begin{array}{ccc}-5&26&\\9&-60\end{array}\right] [/tex]
Find the determinant;

9*1- 2*4= 1

Inverse of the matrix;
1([tex] \left[\begin{array}{ccc}1&-4\\-2&9\end{array}\right] [/tex]

Pre-multiplying the matrix by the inverse on both the left hand side and the right hand side gives the answer above.

Otras preguntas