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Question

Find the derivative of tanx with respect to x using the first principle.

A
sec2x2tanx
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B
secx2tanx
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C
sec2xtanx
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D
sec2x2tan
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Solution

The correct option is A sec2x2tanx
y=tanx
dydx=12tanx×sec2x
=sec2x2tanx
Hence, the answer is sec2x2tanx.

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