In right triangle lqrs m2 s-730. in right triangle tuv, m< v-73-which similarity postulate or theorem proves that aqrs and atuvare similar?

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