JEE Math Practice Question
If $${x^m}.{y^n} = {\left( {x + y} \right)^{m + n}},$$ then $${{{dy} \over {dx}}}$$ is
- A.$${y \over x}$$
- B.$${{x + y} \over {xy}}$$
- C.$$xy$$
- D.$${x \over y}$$
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