The square on the right is a scaled copy of the square on the left. Identify the scale factor. Express your answer in simplest form.
21
8
8
21

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