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The value of `lim_(x to1)(p/(1-x^p)-q/(1-x^q)),p ,q , in N ,` equal (a)`(p+q)/2` (b) `(p q)/2` (c) `(p-q)/2` (d) `sqrt(p/q)`

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CENGAGE ENGLISH-LIMITS AND DERIVATIVES-All Questions
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  3. The value of lim(x to1)(p/(1-x^p)-q/(1-x^q)),p ,q , in N , equal (a)(...

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  19. Evaluate underset(xto0)lim(e^(x)-e^(xcosx))/(x+sinx).

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