In class we defined a stationary point, and noted that a stationary point may be a local maximum or a local minimum. There is, however, a third option, as illustrated by the function f(x)=x^3 when x=0. While the function does have a stationary point at x=0, it is neither a local maximum, nor a local minimum, instead, it’s called a point of inflection.
Read Section 16C, then try questions 1 and 2ac in Exercise 16C before our class on Wednesday.