Homework (Practice Exercise)

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Homework (P. 12 Q. 2)

(a) Domain: (-4, 4] Range: [0, 4]

(b) Domain: [-1, 5] Range: [0, 4]

(c) Domain: (-∞, +∞) Range: [0,+∞)

(d) Domain: (-∞, -2] U (2, +∞) Range: (-∞, 3] U [4, +∞)

(e) Domain: [-5, 5] Range: [-3, 4] or Domain: [-5, 0] U [0, 2] U [2, 5] Range: [1, 0] U [0, -3] U [-3, 4]

(f) Domain: (+∞, -∞] Range: [-1, 1]

(g) Domain: [-2, 2] Range: [-2, 2]

(h) Domain: (-∞, +∞] Range: (-∞, +∞]

(i) Domain: (-∞, 1) U (1, +∞) Range (-∞, 0) U (0, ∞)