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To: megatherium
But allow me to say that this "Vedic mathematics" looks like a bunch of mystic mumbo-jumbo wrapped up in a collection of clever number tricks. I don't doubt the tricks work, and it might be fun to learn them, but someone with a serious interest in math would be much better off learning "western mathematics"...

Yes, however, the Vedic math techniques made it possible for people *without calculators* to do math very quickly in their heads. In their era it was far more significant than it would be for us today.

16 posted on 08/31/2004 7:47:51 AM PDT by valkyrieanne
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To: valkyrieanne
In their era it was far more significant than it would be for us today.

The big innovation in western mathematics, which dramatically simplified arithmetic for scientific calculations, was logarithms (in the early 1600s). These were invented by John Napier. This greatly speeded multiplication, division, powers and roots. For example: to find the cube root of 343, you look up the common log; it's 2.5353 (rounded to 4 decimals). Then you divide that by 3. You get 0.8451. You look in your log table for the number with log 0.8451. You find 7.0000.

At some time soon thereafter, slide rules were invented. These are essentially log tables on a stick. I have my late grandfather's fine Keuffel and Esser slipstick. I figure if nuclear electromagnetic pulse ever happens, and all electronic computational devices are fried, I'll be in very good shape.

Of course, logs aren't so useful for checkbook calculations. Fast mental arithmetic tricks might be very handy for that. But sophisticated finance calculations would still need logs galore.

Napier, by the way, was famous in his lifetime for writing a best-selling book that claimed that the Pope was the antichrist, and the end of the world would happen in 1786.

18 posted on 08/31/2004 9:02:42 AM PDT by megatherium
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