# Math Help - Chain Rule. Just need answer for this question

1. ## Chain Rule. Just need answer for this question

Find the derivative of N(t) = 150 - 600 / sqrt.(16 + 3t^2)

2. ## Re: Chain Rule. Just need answer for this question

Originally Posted by huhuh
Find the derivative of N(t) = 150 - 600 / sqrt.(16 + 3t^2)
rewrite ...

$N(t) = 150 - 600(16+3t^2)^{-\frac{1}{2}}$

... do the chain rule.

3. ## Re: Chain Rule. Just need answer for this question

Originally Posted by skeeter
rewrite ...

$N(t) = 150 - 600(16+3t^2)^{-\frac{1}{2}}$

... do the chain rule.
Just confused as to how to do the chain rule with the 150

4. ## Re: Chain Rule. Just need answer for this question

Originally Posted by huhuh
Just confused as to how to do the chain rule with the 150
the derivative of a constant is zero