Question

Using the limit definition of the derivative, find equation of f'(x) if (x)= 1/x

Answer 1

Use the limit form:
lim h->0 (f(x+h)-f(x))/h =
lim h->0 ((1/x+h)-1/x)/h
And continue from there.

Answer 2

Ok I get to (h/(x(x+h)))/h but not sure what to do from there....

Answer 3

ok nevermind I solved it thanks!