Recent content by kk1995

Thank you all for your replies. All of your replies really helped. The first two replies led me to Euler's formula, while the third one by HallsofIvy led the rest of the problem from the point of getting the values of r using Euler's formula. Note: the -12x should be -120x for the answer, just a...

Homework Statement Suppose that a fourth order differential equation has a solution y=-9e^(3x)xcos(x). a. Find such differential equation, assuming that it is homogeneous and has constant coefficients. b. Find the general solution to this differential equation. x is the independent...