29. midpoint formulatemplatetouchpad

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29. midpoint formulatemplatetouchpad

  1. 1. www.media4math.com TI-Nspire Mini-Tutorials Midpoint Formula Template Summary of KeystrokesCreate a graph window and add two points: c12/Gb 7 1 · (Use ¤ ¡ ` ¢ to move the pointer to the second point.) ·Label the points and map them to variables x1, x2, y1, y2: b 1 7 (Use ¤ ¡ ` ¢ to move the pointer to the first point.) a (Use ¤ ¡ ` ¢ to move the pointer to the second point.) a d (Use ¤ ¡ ` ¢ to move the pointer to the x coordinate of the first point.) a / h X 1 · (Repeat for x2, y1, and y2.) a/hY1·a/h X2·a/hY2·Create a split screen with a spreadsheet: Press the DOC key. 522/eb4X · = ( X 1 + X 2 ) p 2 · (You will be askedif the x1 and x2 refer to the variables you created or the cell references in thespreadsheet. Select the Variable Reference option and click OK. Do these for eachvariable.)¤¤ae·¢``Y·=(Y1+Y2)p2·¤¤ae·Manipulate the points in the graph and watch the spreadsheet recalculate themidpoint: /e`¢¤¡a¡

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