Question

During the 2019 Cricket World Cup the South African Captin Faf du Plessis hit a ball with all his might. After the ball left his bat, the height of the ball in metres wa expressed by the equation h(x)=-x^2+4x after x seconds. calculate the maximum height of the ball?​

Answer 1

Vamos là.

h(x) = -x² + 4x

a = -1

b = 4

c = 0

delta

d = 16

vértice

Vx = -b/2a = -4/-2 = 2

Vy = -d/4a = -16/-4 = 4