What is the solution of differential equations ?

Hi all

How can I solve in matlab ;

    D2y + y = sinx

answer y = c1*cosx + c2*sinx -x*cosx/2

Please Help me.

[4OsT]

dsolve('D2y + y = sinx','x')

y = sinx + C11*cos(x) + C12*sin(x)

wrong answer :(

Answer 1

[Azzi Abdelmalek]

 sol=dsolve('D2y + y = sin(x)','x')