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[" 15.Which of the following functions f...

[" 15.Which of the following functions from "A={x:-1<=x<=1}" to itself are bijections "],[[" (a) "f(x)=(x)/(2)," (b) "g(x)=sin((pi x)/(2))," (c) "h(x)=|x|," (d) "k(x)=x^(2)]]

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