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CBSE Class 12 Math 2011 Solved Paper

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Question : 7
Total: 29
Write the value of ∫
dx
x2+16
Solution:  
∫
dx
x2+16
= ∫
dx
(x)2+(4)2
=
1
4
tan−1(
x
4
) + c , where c is a constant
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