Nominal, Ordinal, Interval & Ratio: Explained Simply - Grad Coach

NOTE: When using interval notation in WeBWorK, remember that: You use 'INF' for ∞ and 'U' for the union symbol. Enter DNE if an answer does not exist.f(r) = x 3x^2 2a) Give the domain of f (in interval notation)b) Find the critical numbers of f (Separate multiple answers by commas)c) Determine the intervals on which f is increasing and decreasing: f is increasing on: f is decreasing on:d) Use the First Derivative Test to determine whether each critical point is a relative maximum, mini