MCQ
फलन tan(e-x) का अवकलज है-
- A$\sec ^2\left(e^{-x}\right)$
- B$- e ^{-x} \sec ^2\left( e ^{-x}\right)$
- C$e ^{-x} \sec ^2\left( e ^{-x}\right)$
- D$-\sec ^2\left( e ^{-x}\right)$
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