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प्रश्न
Choose the correct alternative:
If xm. yn = `("x" + "y")^(("m" + "n"))`, then `("dy")/("dx")` = ?
पर्याय
`"y"/"x"`
`(-"y")/"x"`
`"x"/"y"`
`(-"x")/"y"`
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उत्तर
`"y"/"x"`
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