WBJEE 2016 Math Solved Paper

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Question : 71 of 75
 
Marks: +1, -0
If φ (t) = {
1for0t1
0otherwise
then
3000
r=2014
(
2016
Σ
r=2014
φ
(tr)
φ
(t2.16)
)
dt=
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