For $f(x,y)=x^2{y}^3-2x^4+7$ Find the followings:

$1.$a $\frac{\text{d}\text{e}\text{l}\text{f}}{\text{d}\text{e}\text{l}\text{y}}$

$1.$b $f_x(1,0)=\frac{\text{d}\text{e}\text{l}\text{f}}{\text{d}\text{e}\text{l}\text{x}}{|}_{(1,0)}||$