I have this function:
$f(x,y)=4x^3+2xy^2-x^2+4y^2$
The partial derivative of x and y are:
$\dfrac{\partial f}{\partial x}=12x^2+2y^2-2x$
$\dfrac{\partial f}{\partial y}=4xy+8y$
They ask me to find the critical points of that function but i can't figure it out.
Thank you for the help.