HW-Class-26: Problem 13 [2 points} Let ﬂx] = ln{x4 + 432) . Answer the following questions. 1. Find the intervaﬂs} on which 3“ is increasing.

Answer ﬁn interval notation}: {UJNF} 2. Find the intervaﬂs} on which f is decreasing.

Answer ﬁn interval notation}: {-Inf.ﬂ} 3. Find the local maxima off. List your answers as points In the form (a. in).

Answer (separate by commas}: 4. Find the local minima of f List your answers as points In the term (a. b].

Answer (separate by commas]: {0.0.6} 5. Find the intervaﬂs} on which 3“ is concave upward.

Answer ﬁn interval mutation}: E. Find the intervaﬂs} on which 3“ is concave downward.

Answer ﬁn interval notation}: