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Question
The differential coefficient of sin-1 `((1-"x"^2)/(1+"x"^2))` w.r.t. x is:
Options
`-2/(1+"x"^2)`
`2/(1+"x"^2)`
`1/(1+"x"^2)`
none of these
MCQ
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Solution
`-2/(1+"x"^2)`
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Number System (Entrance Exam)
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