If In=enxTan(x), and ( frac{I_{n+2}-2nI_{n+1}+n^2 I_n}{nI_{n-I}} ) = – McqOptions

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1.	If In=e^nxTan(x), and ( frac{I_{n+2}-2nI_{n+1}+n^2 I_n}{nI_{n-I}} ) = c (1+x²) ( frac{d^2}{dx^2} ( frac{1}{1+x^2}) ), Then value of c equals to
A.	1
B.	2
C.	3
D.	4
Answer» B. 2

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