[" Which of the following function(s) fr...

[" Which of the following function(s) from "f:A rarr A" are invertible,where "A=[-1,1]],[[" 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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