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If y = e^x + sinx , then d^2x/dy^2 is equal to (a) e^x – sinx (b) –(e^x + cosx)^–2

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If y = ex + sinx , then d2x/dy2 is equal to 

(a) ex – sinx 

(b) –(ex + cosx)–2 

(c) –(ex – sinx) (ex + cosx)–2 

(d) (sinx – ex) (cosx + ex)–3

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Correct option (d)

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