Turunan pertama 2x sin x

jawab

y = 2x . sin x

u = 2x
u' = 2

v= sin x
v'  = cos x

y = u v 
y' = u' v + uv'

y' = 2(sin  x) + 2x (cos x)
y' = 2 sin x + 2x. cos x