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प्रश्न
For the substitution \[y=vx\], which differentiated form is correct?
पर्याय
\[\frac{dy}{dx}=x\frac{dv}{dx}\]
\[\frac{dy}{dx}=v+x\frac{dv}{dx}\]
\[\frac{dy}{dx}=\frac{dv}{dx}+xv\]
\[\frac{dy}{dx}=v+y\frac{dv}{dy}\]
MCQ
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उत्तर
With \[y=vx\], both \[v\] and \[x\] occur in a product. Using the product rule gives \[\frac{dy}{dx}=v+x\frac{dv}{dx}\].
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