# Math Help - Derivatives: Product/Quotient Rule

1. ## Derivatives: Product/Quotient Rule

I am working on this problem.

V=(1-t) (1+t^2)^-1

The ^-1 is what is confusing me.

I set it up like this.

(1-t)(2t) + (1+t^2)(-1) I don't think this is right because I did not account for the ^-1. Does that mean I would make the (2t^-1) making it -2t??

2. Originally Posted by KarlosK
I am working on this problem.

V=(1-t) (1+t^2)^-1

The ^-1 is what is confusing me.

I set it up like this.

(1-t)(2t) + (1+t^2)(-1) I don't think this is right because I did not account for the ^-1. Does that mean I would make the (2t^-1) making it -2t??
$(1-t)(t^2+1)^{-1} = \frac{1-t}{t^2+1}$

3. Originally Posted by Miss
$(1-t)(t^2+1)^{-1} = \frac{1-t}{t^2+1}$
I always forget that stupid rule!! Let me try to work through the rest of this and I will post what I get thank you!