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Given, f'(c) =lim(xtoc) (f(x)-f(c))/(x-c...

Given, f'(c) `=lim_(xtoc) (f(x)-f(c))/(x-c)` , when the limit exists,. Using this difinition investigate whether f(x) `=(1)/(x)` has a derivative at x = 2 and obtain the derivative, if it exists.

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