Let $f(x,y)=x^2-y^3+5x+12y+1.$ Find the following:

A$.f_x=\frac{\text{d}\text{e}\text{l}\text{f}}{\text{d}\text{e}\text{l}\text{x}}=$

B$.f_y=\frac{\text{d}\text{e}\text{l}\text{f}}{\text{d}\text{e}\text{l}\text{y}}=$

C$.f_{}=\frac{de{l}^{2}f}{del{x}^2}=$

D$.f_{xy}=\frac{de{l}^{2}f}{\text{d}\text{e}\text{l}\text{y}\text{d}\text{e}\text{l}\text{x}}=$

E$.f_{yx}=\frac{de{l}^{2}f}{\text{d}\text{e}\text{l}\text{x}\text{d}\text{e}\text{l}\text{y}}=$

F$.f_{yy}=\frac{de{l}^{2}f}{del{y}^2}=$