Answer:
Step-by-step explanation:
The matrix equation is already set up as ...
PD = Q
The normal method of solution is to multiply the equation by P^-1, but that matrix does not exist. Here, we'll solve by considering what the equation means, element by element.
Suppose matrix D looks like ...
We require the product PD = Q, so that means ...
0·a +0·c = 0
0·b +0·d = 0
1·a + 0·c = 0
1·b +0·d = 0
We can see from these equations that a=0 and b=0 are required. The values of c and d can be anything you like.
A suitable matrix for D could be ...