Which of the following functions from A = {x : -1 ≤ x ≤ 1}
to itself are bijections?
(a) f(x) = x/2 (b) g(x) = sin ( πx/2)
(c) f(x) = 2x + 1 (d) f(x) = x² + x
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Answer:
1+23+4+5+
Step-by-step explanation:
17+7+6+7+878(9(+
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