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If In=int cot^n dc and I0+I1+2(I2+.........

If `I_n=int cot^n dc and I_0+I_1+2(I_2+.......+I_8)+I_9+I_10=A(u+(u^2)/2+........+(u^9)/9)+` constant where `u=cot x` then

A

A=1

B

A=-1

C

A=1/2

D

A=-1/2

Text Solution

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The correct Answer is:
B
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