IMathAS-libretexts

Find $\displaystyle \frac{{{\left.{d}{y}\right.}}}{{{\left.{d}{x}\right.}}}$ given $\displaystyle {7}{x}^{{3}}{y}={1}$

$\displaystyle \frac{{y}}{{{3}{x}}}$
$\displaystyle -\frac{{x}}{{{3}{y}}}$
$\displaystyle \frac{{1}}{{{21}{x}^{{2}}}}$
$\displaystyle \frac{{{3}{y}}}{{x}}$
$\displaystyle \frac{{-{3}{y}}}{{x}}$