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B
2sec2[log(x2)]x
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C
xsec2[log(x2)]
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D
1x2sec2[log(x2)]
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Solution
The correct option is B2sec2[log(x2)]x y=tan[log(x2)] differentiate w.r.t x dydx=ddx[tan{log(x2)}] dydx=sec2(logx2).ddx[log(x2)] dydx=sec2(logx2).1x2.ddx(x2) dydx=sec2(logx2).1x2.2x dydx=2x.sec2(logx2)