Jawabanmu

2014-05-04T13:11:12+07:00
f '(x) = - sin 1/x . -1 . x^-2
sehingga : f '(x) = 1/x^2 . sin 1/x

semoga membantu ^_^
2014-05-04T13:22:47+07:00
F'(x)= -sin 1/x . -1. x^{-2}
F'(x)= \frac{1}{x^{2} } . sin  \frac{1}{x}