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**1. Homework Statement**

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. Homework 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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