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[" 44.If "f:R rarr R" is an invertible f...

[" 44.If "f:R rarr R" is an invertible function such that "f(x)" and "],[f^(-1)(x)" are symmetric about the line "y=-x" ,then "],[" a."f(x)" is odd "],[" b."f(x)" and "f^(-1)(x)" may not be symmetric about the line "],[y=x],[" c."f(x)" may not be odd "]

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