# Thread: derivatives of the function.

1. ## derivatives of the function.

2. That's a wonderful multiplication rule / chain rule. Let's see what you get.

3. x*cos(-3/x^2)+1*sin(3/x)

4. Originally Posted by FamousDrumFreak
x*cos(-3/x^2)+1*sin(3/x)
The first term is wrong. Use the chain rule to get the derivative of $\sin \left(\frac{3}{x}\right)$.