Question: Show that the modulus function : R R given by f(x)=xis neither one-one nor onto, xis x, if xis positive or 0 and |x|is

Show that the modulus function : R R given by f(x)=xis neither

Show that the modulus function : R R given by f(x)=xis neither one-one nor onto, xis x, if xis positive or 0 and |x|is -X, if X is negative. where

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