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`lim_(x rarr b) (sqrt(x)-sqrt(b))/(x-b)=`_____.A. `(1)/(2b)`B. `(sqrt(2))/(b)`C. `(1)/(2sqrt(b))`D. `(1)/(sqrt(2)b)` |
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Answer» Correct Answer - C Use the formula, `underset(x rarr a)("lim")(x^(n)-a^(n))/(x-a)=na^(n-1)`. |
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