Question

please give the answer of this question
if y=ae^-kt(cos bx+t) prove that y2+2ky1+(k^2+n^2)y=0

Answer 1

what have you tried?

could you find
\(y'\)
?

and i assume u need to prove
\(y'' +2ky'+(k^2+n^2)y=0\)

Answer 2

I thought the y2 was y^2

Answer 3

yes y'' makes more sense

Answer 4

great work guys