Question

xsquare +ysquare +2y=15 then dy/dx​

Answer 1

$\frac{d}{dx} (x ^{2} ) + \frac{d}{dx} (y ^{2} ) = \frac{d}{dx} (15)$

$2x + \frac{d}{dy} (y ^{2} ) \frac{dy}{dx} = 0$

$2x + 2y \frac {dy}{dx} = 0$

$2y \times \frac{dy}{dx} = - 2$

$\frac{dy}{dx} = - \frac{x}{y}$