Exercise 3. This software computes the inverse of any element in $GL(2,Z_p)$.

Please enter the value of the four entries of the 2 x 2 matrix $\begin{bmatrix} a & b \\ c & d \end{bmatrix}$ together with a prime $p$ and click the button, the inverse of the matrix will show below.

$a$:
$b$:
$c$:
$d$:
$p$: