Zeroing-in on interesting points using the ZOOM key

  • Graph y=3x 2^(-x) in the nice decimal window (ZOOM, then 4).

  • Use TRACE (as explained on the last slide) to approximate the high point P.

  • Press the ZOOM key, then the number 2 (Zoom In).

  • Press ENTER. The resulting screen is displayed to the right.

  • Continue to the next slide.