On the way to school a student rides his bike to the bus stop he then wait a few minutes for the bus to come and rides the bus to school the bus stops at school he walks from the parking lot to his first class is the graph of his distance always increasing

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