Q1698: If $e^{-x}+e^{-y}=2$, then $\frac{dy}{dx}$ is... | Class CBSE Class 12

Class CBSE Class 12 Mathematics Derivatives Q #1698

KNOWLEDGE BASED 1 Marks 2026 AISSCE(Board Exam) MCQ SINGLE

If $e^{-x}+e^{-y}=2$, then $\frac{dy}{dx}$ is

(A) $e^{x-y}$

(B) $e^{y-x}$

(C) $-e^{x-y}$

(D) $-e^{y-x}$

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