how to solve using limit definition of the derivative for f(x)=2x^3+5x^2-7x-4

my ans:

6x^2+10x-7

plse correct me...

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- December 10th 2008, 08:59 PMmathseekusing limit derivative?
how to solve using limit definition of the derivative for f(x)=2x^3+5x^2-7x-4

my ans:

6x^2+10x-7

plse correct me... - December 10th 2008, 09:18 PMProve It
- December 10th 2008, 09:23 PMmathseeklimit def
than what is limit definition??

- December 10th 2008, 09:27 PMo_O
Definition of a derivative:

- December 10th 2008, 09:32 PMmathseeklimit def
so when i answer this question above....i just give my ans will do right?

- December 10th 2008, 09:40 PMProve It
- December 10th 2008, 09:42 PMo_O
Well you have to show your work probably and you do so by going through the grunt work of expanding and simplifying in order to evaluate the limit:

Eventually you can factor out an h from the top to cancel it with the bottom and you should get your answer. Like I said, a lot of grunt work.