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JEE Main 10 Jan 2019 Shift 1 Solved Paper

Section: Mathematics
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Question : 52 of 90
 
Marks: +1, -0
If
dy
dx
 +
3
cos2x
 y =
1
cos2x
 , x ∊ (−
π
3
,
π
3
) and y (
π
4
) =
4
3
 , then y (−
π
4
) equals :
[10 Jan 2019 Shift 1]
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