A quick tutorial on how to solve all the points that was shown in the title. I hope the 4 wasn't completely obstructed in the last example of the video... Anyway, I hope you learned something! I defined all FDT, sign charts, and critical points.
By the way, a stationary point is when f' is equal to 0, while a Critical point is when f' is 0 or undefined. Hope this clarified some things for you, and I hope you enjoyed the video! Good luck in calculus!
landus