Sun K.

asked • 06/19/13

Solve the differential equation?

Solve the differential equation y^(4)-5y"-36y=0.

r^4-5r^2-36

(r^2-9)(r^2+4)

r=3, -3, 2i, -2i

y=c1*e^3x+c2*e^-3x+c3(cos(2x))+c4(sin(2x))

Is that the right answer?

And can someone give me some websites that has lots of practice problems like this for differential equations?

Sun K.

Thank you so much.

Report

06/19/13

1 Expert Answer

By:

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.