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Question

Consider the function, F(x)=x1(t2t)dt,xR. Find the inflection point.

A
x=12
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B
x=1
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C
x=0
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D
inflection point not exists
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Solution

The correct option is A x=12
Given, F(x)=x1(t2t)dt
Using Leibniz rule of differentiation,
F(x)=(x2x)ddxx=(x2x)
F′′(x)=2x1
Now for inflection point f′′(x)=0x=12
Hence x=12 is inflection point of F.

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