If h > 0, find all values of h such that floor(h) * ceil(h) = 72. Express your answer using interval notation.
Note that
Floor ( 8 < h < 9) = 8
and
Ceiling ( 8 < h < 9) = 9
So
Floor ( 8 < h < 9) * Ceiling ( 8 < h < 9) =
8 * 9 =
72
The interval is 8 < h < 9
