JEE Main 8 April 2017 Paper Solved Paper

Section: Mathematics

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Question : 61 of 90

Marks: +1, -0

Let f(x)=210.x+1 and g(x)=310.x−1. If (fog)(x)=x,then x is equal to:

[Main 8 April 2017]

310−1
310−2−10
210−1
210−3−10
1−3−10
210−3−10
1−2−10
310−2−10

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