Question

How do I find the derivative of this?

Answer 1

\[\sin \frac{ \pi }{ x }\]

Answer 2

According to the quotient rule I know the derivative of \[\frac{ d }{ dx }(\frac{\Pi }{ x }) = \frac{ -\Pi }{ x^2 }\]

Answer 3

But how would I simplify it when I apply the chain rule?