Question

if a/b=c/d,show that a3c+ac3/b3d+bd3=(a+c)4/(b+d)4

Answer 1

=> (1/2)*{x(0 - b) + a(b - y) + 0(y - 0)} = 0

=> -bx + ab - ay = 0

=> bx + ay = ab

=> bx/ab + ay/ab = 1

=> x/a + y/b = 1