I'm assuming you meant and right?
What ideas have you had so far?
I was given this problem in my differential equations course and I'm not too sure how to solve for it:
Let A=A(t) be an n x n matrix, let y be a solution of the system y=Ay on (a,b) and let P=P(t) be an n x n matrix, invertible and differentiable on (a,b).
Find a matrix B such that Py is a solution to the system x=Bx on (a,b).
Thanks a lot for your help.