If you're looking to find the derivative from the definition, check out this thread: http://www.mathhelpforum.com/math-he...ve-answer.html
But it looks like you're trying to prove the existence of a limit.
How would you show that the derivative of is equal to for , using the definition of a derivative??
I started and got lost in the calculation...
I have to start with the following
and show I can make it less than , which is just the definition
I know I have to play with... can anyone help me out? this is due tomorrow so the more you can give me the better lol thanks
If you're looking to find the derivative from the definition, check out this thread: http://www.mathhelpforum.com/math-he...ve-answer.html
But it looks like you're trying to prove the existence of a limit.