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यदि फलन f(x)= (2x)/(1+x^(2)) तो f(tan th...

यदि फलन `f(x)= (2x)/(1+x^(2))` तो `f(tan theta)` का मान है

A

`tan 2 theta`

B

`sin 2 theta`

C

`cos 2 theta`

D

`cot 2 theta`

लिखित उत्तर

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