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- The
*identity function*`f`(`x`):=`x`is*bijective*: - The
*square function*`f`(`x`):=`x`^{2}is*neither*injective*nor*surjective: - The function
`f`(`x`):=`x`^{3}-`x`is*surjective*but not injective:

Author: Wolfgang Schreiner

Last Modification: December 7, 1999