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If `y=cost and x=sint`, then what is `(dy)/(dx)` equal to?A. xyB. `x//y`C. `-y//x`D. `-x//y` |
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Answer» Correct Answer - D Let `y=cost, x=sint` `(dy)/(dt)=-sint,(dx)/(dt)=cost` `(dy)/(dx)=(dy//dt)/(dx//dt)=-(sint)/(cost)=-(x)/(y)` |
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