Linear algebra

$($a$)$ Write the following linear system of equations in state$-$space notation $-A*x=B$ and

determine $x=[x,y{]}^T$

$4*x+3*y=20$

$-5*x+9*y=26$

$($b$)$ Solve for the matrix $x=[x,y{]}^T$

Remark. Hint: Use matrix inverse. Documentation on inverse operation in numpy is

described here: np$.$linalg.inv$()$

$($c$)$ Define a python function with an input consisting of the roll, pitch, and yaw angles

roll