Pre-calc question

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If f(t)=5/t

What is f(t)-f(a)
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t-a

Guest Oct 24, 2013

Melody · Answer 1 · 2013-10-25T12:16:39

If f(t)=5/t

[ f(t)-f(a)] / (t-a)

= [5/t - 5/a] / (t-a)

=(5a-5t)/(at) * 1/(t-a)

=-5(-a+t)/(at) * 1/(t-a)

=-5/(at)

Guest · Answer 2 · 2013-10-25T12:18:28

It would be 5/t - the function of a