Show, by considering its minimum, that f (x) = x2 2x + 3 takes on only positive values
Chapter 4, Problem 92(choose chapter or problem)
Show, by considering its minimum, that f (x) = x2 2x + 3 takes on only positive values. More generally, find the conditions on r and s under which the quadratic function f (x) = x2 + rx + s takes on only positive values. Give examples of r and s for which f takes on both positive and negative values.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer