WBJEE 2016 Math Solved Paper

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Question : 20 of 75
 
Marks: +1, -0
If f(x) = tan−1[
log(
e
x2
)
log(ex2)
]
+ tan−1[
3+2‌logx
1−6‌logx
]
then the value of f'(x) is
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