is a differentiable function at .

i need to prove that:

if there is a constant which maintains that to every

so ... thx!! :)

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- May 8th 2013, 08:53 AMorirDifferentiable function problem
is a differentiable function at .

i need to prove that:

if there is a constant which maintains that to every

so ... thx!! :) - May 8th 2013, 09:16 AMPlatoRe: Differentiable function problem
- May 8th 2013, 09:33 AMorirRe: Differentiable function problem
- May 8th 2013, 09:39 AMPlatoRe: Differentiable function problem
- May 8th 2013, 10:04 AMorirRe: Differentiable function problem
oh, i know

**why**. it's because the mean value theorem.

and.. the precise definition is that there is an m>0, and n>0, so that for**every**x larger than m, f(x) larger than n. - May 8th 2013, 10:13 AMPlatoRe: Differentiable function problem
- May 8th 2013, 10:19 AMorirRe: Differentiable function problem
i guess i can show that. but i don't know what does that imply...

and what about my way? to say that and that way show the right of the definition above. - May 8th 2013, 10:23 AMPlatoRe: Differentiable function problem
- May 8th 2013, 11:11 AMorirRe: Differentiable function problem
oh, i got you..

but still - does my way work too?