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[" If "y=(tan^(-1)x)^(2)then(x^(2)+1)^(2...

[" If "y=(tan^(-1)x)^(2)then(x^(2)+1)^(2)(d^(2)y)/(dx^(2))+2x(x^(2)+1)(dy)/(dx)=],[[" A) "4," B) "2," C) "1]]

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If y=(tan^(-1)x^(2)), show that (x^(2)+1)^(2)(d^(2)y)/(dx^(2))+2x(x^(2)+1)(dy)/(dx)=2

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