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Mathematics

About the Cover

The Big Bend Region is the westernmost region of Texas. Known for its wide open skies, it is home to the International El Paso Balloon Festival. The distance that a balloon travels is determined by its rate, or speed, and the time it is in the air. Mathematically, these three variables are related by the linear function d = rt. You’ll learn more about linear functions in Chapters 3, 4, and 5.

About the Graphics
Periodic pattern on a sphere. Created with Mathematica. A periodic pattern made from various n-gons separated by bands was constructed in the plane. The pattern was stereographically mapped onto the upper half of a sphere. For more information, and for programs to construct such graphics, see: www.wolfram.com/r/textbook.

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