Here are the main points that are addressed in the video. Please read these and think about them as you watch.

  • We can tell where a function has maximum and minimum values by finding critical points of its derivative
  • Critical points are where the derivative of the function is zero or undefined
  • When a derivative of a function switches from positive to negative values, the function has a local maximum
  • When a derivative of a function switches from negative to positive values, the function has a local maximum
  • To identify global maxima and minima, we also need to consider the endpoints of the function on an interval