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Question

Let y=g(x) be the inverse of a bijective mapping f:RRf(x)=3x3+2x The area bounded by graph of g(x) the x-axis and the ordinate at x=5 is:

A
54
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B
74
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C
94
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D
134
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Solution

The correct option is D 134
From figure required area
=10(53x32x)dx
=[5x3x442x22]10
=134
363949_260788_ans.bmp

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