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If `siny+e^(-xcosy)=e`, then `(dy)/(dx)` at `(1,pi)`, is

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If `siny+e^(-xcosy)=e`, then `(dy)/(dx)` at `(1,pi)`, is
A. `siny`
B. `-xcosy`
C. e
D. `siny-xcosy`
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Correct Answer - C
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