Question: Need help with this Let f : R - R be continuous and satisfy If(2) - f(y)1 2 1x- yl for all x, y E

Need help with this

Need help with this Let f : R - R be continuous

Let f : R - R be continuous and satisfy If(2) - f(y)1 2 1x- yl for all x, y E R. Prove that f is surjective

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