Question

Mohon dibantu. saya mengerjakan gak ketemu-ketemu

Answer 1

(x^-1/2 - y^-1/2)/(x^-1 - y^-1)
= (x^-1/2 - y^-1/2)/(x^-1 - y^-1) . xy/xy
= (x^1/2 y - xy^1/2) / (y - x)
= (yVx - xVy) / (y - x)
= V(xy) (Vy - Vx) / (Vy - Vx)(Vy + Vx)
= V(xy) / (Vx + Vy)
Jawaban : B