Pregunta: Given f(x,y)=−5x3−xy4+6y2 fx(x,y)=fy(x,y)=

Find the Derivative for the given expression:

$\mathrm{f}(\mathrm{x},\mathrm{y})=-5{\mathrm{x}}^3-\mathrm{x}{\mathrm{y}}^4+6{\mathrm{y}}^2$

By the Sum Rule, the derivative of $-5{\mathrm{x}}^3-\mathrm{x}{\mathrm{y}}^4+6{\mathrm{y}}^2$ with respect to $\mathrm{x}$ is...