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Question
Differential coefficient of sec (tan–1x) w.r.t. x is ______.
Options
`x/sqrt(1 + x^2)`
`x/(1 + x^2)`
`xsqrt(1 + x^2)`
`1/sqrt(1 + x^2)`
Solution
Differential coefficient of sec (tan–1x) w.r.t. x is `x/sqrt(1 + x^2)`.
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