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RUET admission questions 2005-06 (Rajshahi University of Engineering & Technology)

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  1. 1.If y=cot⁡−1x2ex+cot⁡−1exx2y = \cot^{-1} \frac{x^2}{e^x} + \cot^{-1} \frac{e^x}{x^2}, then dydx=?\frac{dy}{dx} = ?

    1. A.11
    2. B.00
    3. C.ee
    4. D.−1-1
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