Asked by Eileen

Evaluate the difference quotient for the given function.
f(x)=1/x, f(x)-f(a)/(x-a).

Is the answer 1
Answered by Reiny
(1/x - 1/a)/(x-a)
= [(a-x)/ax]/(x-a)
= -1(1/(ax))
= -1/(ax)