# How do you differentiate #s=(t^-1+t^-2)/t^-3#?

##### 1 Answer

Nov 21, 2016

#### Explanation:

First rewrite the function:

#s(t)=(1/t+1/t^2)/(1/t^3)=t^3(1/t+1/t^2)=t^2+t#

Through the product rule, which states that

#s'(t)=2t^(2-1)+1t^(1-1)=2t^1+1t^0=2t+1#