books.google.com - "Recommended with confidence" by The Times Literary Supplement, this lively survey starts with simple arithmetic and algebra and proceeds by gradual steps through graphs, logarithms, and trigonometry to calculus and the world of numbers. Generations of readers have found it the ideal introduction to...http://books.google.com/books/about/Mathematician_s_Delight.html?id=oW9g0nYKtPQC&q=average+speed&utm_source=gb-gplus-shareMathematician's Delight

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## Mathematician's DelightBy W. W. Sawyer |