SOLUTION: x^3+2x^2-x-2 Finding f'(x) from the definition of a derivative using f(x+h)-f(x)/h LIMIT -> 0. Thank you.

We calculate f(x+h), then f(x+h)-f(x), then ,
then 



We find f(x+h):







We find f(x+h)-f(x)





We simplify and find that all terms not containing h cancel:



We factor out h



We find 



We cancel the h's:









Edwin