Cooper $15\mathrm{.}0\mathrm{.}02$

Find the partial derivatives with respect to $x$ and

$($a$)\frac{x}{y}$

$\frac{\text{d}\text{e}\text{l}}{\text{d}\text{e}\text{l}\text{x}}=\frac{x}{y}$

$\frac{x}{y}$

$($b$)3x8y2$

$\frac{\text{d}\text{e}\text{l}}{\text{d}\text{e}\text{l}\text{x}}=$

$\frac{\text{d}\text{e}\text{l}}{\text{d}\text{e}\text{l}\text{y}}=$

$($c$)(2x-5y{)}^2$

$\frac{\text{d}\text{e}\text{l}}{\text{d}\text{e}\text{l}\text{x}}=$

$\frac{\text{d}\text{e}\text{l}}{\text{d}\text{e}\text{l}\text{y}}=$

$($d$)x^{-2}{y}^{-3}$

$\frac{\text{d}\text{e}\text{l}}{\text{d}\text{e}\text{l}\text{x}}=$

$\frac{\text{d}\text{e}\text{l}}{\text{d}\text{e}\text{l}\text{y}}=$

Note: You can earn