Question

Verify the solution of the differential equation...y=C_1*cos(x)+C_2*sin(x) y''=+y=0

Answer 1

It just wants you to take the derivative twice and see that the second derivative of the function is the function itself.

Answer 2

Did you take the derivative of y with respect to x yet?

Answer 3

I don't understand how to take the derivative twice 'cause i don't know what the C_1 and C_2 mean..are they just constants? so I could replace them with a and b?

Answer 4

Yes, they are constants. You can use anything you like for those

Answer 5

:D thanks :) I got it :)

Answer 6

great! =)