In: Math
Consider the function below. (If an answer does not exist, enter DNE.)
f(x) =
| 1 | 
| 2 | 
x4 − 4x2 + 2
(a) Find the interval of increase. (Enter your answer using interval notation.)
(−2,0)∪(2,∞)
  
Find the interval of decrease. (Enter your answer using interval
notation.)
(−∞,−2)∪(0,2)
  
(b) Find the local minimum value(s). (Enter your answers as a
comma-separated list.)
DNE
  
Find the local maximum value(s). (Enter your answers as a
comma-separated list.)
2
  
(c) Find the inflection points.
| (x, y) | = | 
 | 
||
| (x, y) | = | 
 | 
Find the interval where the graph is concave upward. (Enter your
answer using interval notation.)
Find the interval where the graph is concave downward. (Enter your
answer using interval notation.)