Question

for f(x)^2 compute and simplify the difference quotient f(x+h)-f(x)/h. I ended up with f(x)=0. is this correct?

Answer 1

how did u arrive at f(x)=0 ?

Answer 2

basically by canceling out the h and 5x^2

Answer 3

what is f(x)

Answer 4

did you mean f(x)=x^2 ? cos i don't see how you can start working that out if you haven't defined f(x) in the first place :/

Answer 5

f(x)=5x^2

Answer 6

sorry

Answer 7

you have to substitute (x+h) for x in f(x+h), you're not going to end up with 0

Answer 8

ok so you'll do what Dockworker said and you'll end up with this.
\[\huge \frac{5(x+h)^2-5x^2}{h} \]\[\huge \text{simplify that and I believe that'd be it :) } \]

Answer 9

thats what i thought. thanks

Answer 10

anytime :)