Question: Prove that the greatest integer function f: R R given by f(x) = [x] is neither one-one nor onto, where [x] denotes the greatest

Prove that the greatest integer function f: R R given by f(x)

Prove that the greatest integer function f: R R given by f(x) = [x] is neither one-one nor onto, where [x] denotes the greatest integer less than or equal tox.

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