F(x)=0,5-sin x,f(x)=-cos x

Question

F(x)=0,5-sin x,f(x)=-cos x

Answer 1

F(x)=0,5-sin x
f`(x)=cosx 


f(x)=-cos x
f`(x) =sinx

Answer 2

F(x)=0.5xcosx    f(x)=-sinx