Question

Do the functions have the same concavity? f (x) = -x^2 + 40x + 120

Answer 1

Given data:

The given function is f (x) = -x^2 + 40x + 120​.

Here, the coefficient of x^2 is -1 , which indicate that the given parabola is downward.

Thus, the given parabola has same downward concavity .