Agrocery bag containing 4 potato weight 2 pounds an identical bag that contains 12 potato weight 4 pounds write an equation in standard form

Find the directions in which the function increases and decreases most rapidly at upper p 0p0. then find the derivatives of the function in these directions. f(x,y)equals=x squared plus xy plus y squaredx2+xy+y2, upper p 0p0left parenthesis 1 comma negative 4 right parenthesis