1. The problem statement, all variables and given/known data If A = [ -4e^4t sin(9t) -4e^5t cos (9t) ] [ 4e^4t cos (9t) -4te^5t sin (9t) ] then A^-1 = [ ___ ___ ] [ ___ ___ ] 2. Relevant equations how do you deal with the exponents? 3. The attempt at a solution Put into RREF, and then see what the inverse is?