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-- Mathematics - Section B2
Calculus
If $x^{\frac{2}{3}}+y^{\frac{2}{3}}=a^{\frac{2}{3}}$ then $\frac{dy}{dx}$ is equal to :
$\sqrt[-3]{\frac{y}{x}}$
$-3\sqrt\frac{y}{x}$
$\sqrt[3]{\frac{y}{x}}$
$-\sqrt\frac{y}{x}$