Let f:RtoQ be a non-constant increasing function. Then:

(A) f is constant on some interval [a,b]

Q2Section I (General (compulsory))2 of 190

A monotone function landing in $\mathbf Q$ must be constant somewhere

Let $f:\mathbb{R}\to\mathbb{Q}$ be a non-constant increasing function. Then:

Pick an option to check your answer.

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