Question

Find the minimum point of y=5+3x-x^2Show working out if u can plz

Answer 1

This will be a maximum point as the coefficient of x^2 is negative.
y' = -2x + 3 = 0

x = 1.5

y = 5 + 3(1.5) - 1.5^2 = 7.25

required point is (1.5,7.25)