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Evaluate, lim(x to 1) (x^(4)-1)/(x-1)=li...

Evaluate, `lim_(x to 1) (x^(4)-1)/(x-1)=lim_(x to k) (x^(3)-k^(3))/(x^(2)-k^(2))` , then find the value of k.

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To solve the problem, we need to evaluate the limit \[ \lim_{x \to 1} \frac{x^4 - 1}{x - 1} \] and set it equal to ...
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