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KEAM 2020 Math Paper
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© examsnet.com
Question : 111
Total: 120
π
2
∫
0
1
1
+
cot
4
x
d
x
=
π
2
π
4
π
π
8
2
π
Validate
Solution:
I
=
π
∕
2
∫
0
1
1
+
cos
4
x
sin
4
x
d
x
=
π
∕
2
∫
0
sin
4
x
sin
4
x
+
cos
4
x
d
x
=
π
4
© examsnet.com
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