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Why Study Calculus? - How About Cube Roots Without a Calculator!
By Joe Pagano


If you thought that the only purpose of calculus was to confuse you, then think again. Continuing with my Why Study Calculus? series, I discuss yet another application of this branch of mathematics to numbers. Numbers and the operations performed on them are the linchpins to mathematics, and all higher branches are one way or another intimately linked to their inherent properties. One nice application of the Calculus to numbers is the approximation of cube roots. What is enticing is that this technique can be done without a calculator and without even a knowledge of the underlying theory.

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Chirag Jain writes:

Subject: Limitations of the method

This method has limitations. It works only for calculating cube root of numbers very close to the cube of an integer.

Comment provided October 6, 2009 at 1:57 am

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