(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

This problem is not hard at all its just that this stupid online homework program is a problem. Anyways,

f(x)=1/(5x+7)

The quotient:

f(7+h)+f(7)\h

This can be simplified to:

1\(A+Bh)

What is A & B

What is f'(7)?

2. Relevant equations

[tex]lim_{h\rightarrow0}\frac{\f(7+h)-f(7)}{h}[/tex]

3. The attempt at a solution

The derivative is easy to get.

The final form is [tex]\frac{-5}{210h+1764}[/tex]

How do I get it to:

[tex]\frac{1}{A+Bh}[\tex]

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# Homework Help: Derivative help

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