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Let f (x) = (5x − 1 )/(x+ 7) . Find f ' (x). First set...

Let f (x) = (5x − 1 )/(x+ 7) . Find f ' (x). First set up the limits and simplify the first one.


Using equation (6) from Section 3.1

f'(x) = lim t→x

  (simplify; no complex fraction).

Using equation (2) from Section 3.2

f'(x) = lim h→0

  (do not simplify).

f'(x) =

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