Question

Question #61134

Answer 1

Ok, I hope I got the questions right...!

Explanation:

I will start from the second that helps to understand the first...

Now you can try to solve question a) where I think he wants the inverse:

The matrix with `a,b,c and d` will be your inverse!!!

If you cannot find it let me know...:-)

Answer 2

ok then...let us try:

Explanation:

Have a look:

Now try by yourself to test the inverse doing:
`A*A^-1` to see if it gives you `((1,0),(0,1))`