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https://www.meritnation.com/ask-answer/question/if-x-root-1-y-y-root-1-x-0prove-that-dy-dx-1/limits-and-derivatives/7070555
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https://www.meritnation.com/ask-answer/question/if-x-root-1-y-y-root-1-x-0prove-that-dy-dx-1/limits-and-derivatives/7070555
Regards