Jika fungsi h(x)=2sin(5x−6)+cos(6−5x), maka h′(x) sama dengan ....
5cos(5x−6)−5sin(6−5x)
5cos(5x−6)+5sin(6−5x)
10cos(5x−6)−5sin(6−5x)
10cos(5x−6)+5sin(6−5x)
10cos(5x−6)−10sin(6−5x)