a) find the min and max values of f(x):
b) A point of inflection is a point where the graph changes direction of concavity, i.e. a point where f''(x)=0. Find the inflection point(s) of f, and determine where the function is concave up and concave down.
i presumed that if y'=0 then it is either the min/max value,
so using product rule, i got 0=2(x+1)(x-2)
i.e. x=-1 or x=2
so with those x values, the function will be at its min = 0,
i also presumed that the max value is infinity...
for b), well im stuck on that
could anyone help me on both questions?