Question

At what value(s) of x does f(x) = -x4 + 2x2 have a critical point where the graph changes from decreasing to increasing? A) 0 and -1 only B) 0 and 1 only C) -1 and 1 only D) 0 only

Answer 1

Answer:

It reaches its peek at 1, then begins to decrease until it reaches zero, but then rises back up to one before decreasing again