Question

DIFFERENTIAL EQUATION:
help please, anybody.

(D^2 +4)y =4sin^2 (x)

Answer 1

r^2 + 4 =0
r = \(\pm\)2i
no repeated root...so form will be a sin x+ b cos x

Answer 2

and not Acosx+Bsinx+Cxcosx+Dxsinx

Answer 3

yes, i got the answer now. :D yay!

Answer 4

:D

Answer 5

i still wonder , how u got x in the answer..

Answer 6

instead of using sin^2 x, i used 1/2 - 1/2*cos2x

Answer 7

ok, so form will be asin x + bcos x +cx ?

Answer 8

yeps

Answer 9

:)