Lecture 12 (Real Analysis 2020)

A function f : D → ℝ is monotonically increasing provided that whenever u, v ∈ D with u < v, then:

1. A.f(u) < f(v)
2. B.f(u) ≥ f(v)
3. C.f(u) = f(v)
4. D.f(u) ≤ f(v)