# Math Help - did i do this correctly

1. ## did i do this correctly

for a parabola $f(x) = X^2$
1) state minimum and maximum
minimum is 0
maximum is ?: would it be ∞ or would i say that there is no maximum?

2) intervals of increasing/decreasing
increasing: (0, ∞)
decreasing: (-∞ , 0)

2. You did do this correctly.

You say a function has no maximum. A maximum of infinity is meaningless, as the maximum defines the highest point.