MATH LEARNING CENTER

Math 163 Information and Links

Click Here for a link to contact information for your instructor.  Click Here for the current Math Schedule to see the times courses are offered.

Check out these links which geometrically illustrate the convergence of series.  The pictures show a fixed area broken up into pieces repeatedly. 

  1. This shows that 1/3 + 1/9 + ... = 1/2.  Notice how the large square is split into three pieces vertically.  Then the middle piece is split into 3 pieces horizontally.  Red and Yellow each take up one third of each area.  The sum of each of those pieces fills up the square.  Since the area of the square can be split into two congruent pieces (the one for yellow and the one for red), then the area occupied by each color must be 1/2. 
  2. This shows that 1/4 + 1/16 + ... = 1/3.  A similar argument to the one above.  Here a triangle is split into 4 congruent pieces.  One color occupies each large piece, with one large piece then split into 4 again.  The total area of the triangle is split into 3 congruent pieces which added together give the area of the original triangle.  Therefore, each one must occupy 1/3 of the area. 

 

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Last modified: October 14th, 2009