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JEE MATHEMATICS MCQ: MAXIMA & MINIMA

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Analyzing +4 | -1
If mm and nn are positive integers and f(x)=∫1x(t−a)2n(t−b)2m+1dt,a≠bf(x)=\int_1^x(t-a)^{2 n}(t-b)^{2 m+1} d t, a \neq b, then
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Correct option: A
x=bx=b is a point of local minimum
Option A (x=bx=b is a point of local minimum) is correct because the first derivative changes sign from negative to positive at x=b.

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