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Question

Let f(x)=sin1(sinx)(πx2). Then number of solutions of equation f(x)=0 in x[π,π] is

A
2
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B
3
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C
0
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D
4
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Solution

The correct option is A 2
f(x)=|sin1(sin x)|(πx2)
Draw curve of y=|sin1(sin x)| and y=πx2
Now find number of intersection points of curves.



So, there are 2 solutions of f(x)=0

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