Y = x 2r [0, +∞) Even number (-∞, 0) minus, (0, +∞) plus (1, 1).

Y = X3RRRR odd number (-∞, +∞) increases (1, 1)

Y = x 0.5 [0, +∞) increase [0, +∞] non-odd non-even [0, +∞] increase (1, 1).

Y = x (- 1) {x | x ≠ 0} {y | y ≠ 0} odd (-∞, 0) minus (0,+∞) minus (1, 1).