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Question

ddx[tan1(5x16x2)]=


A

11+4x2

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B

11+4x2

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C

21+x2+31+9x2

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D

31+9x2+21+4x2

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Solution

The correct option is D

31+9x2+21+4x2


5x=2x+3x.take 2x=tanA and 3x=tanB theny=tan12x+tan13x


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