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Download How to Solve Problems: New Methods and Ideas by Spyros Kalomitsines PDF

By Spyros Kalomitsines

This booklet describes intimately a sequence of latest innovations to unravel difficulties, almost always in arithmetic. New options are provided which were confirmed in school via the writer for over thirty years. those options enhance the cutting-edge in challenge fixing and expand latest tools of such nice mathematicians and cognitive psychologists similar to G. Polya, H.A. Simon, W. Wickelgren, and J. Greeno. This publication presents each one method with a close description after which illustrates it via a few difficulties spanning a large spectrum of mathematical components.

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Extra resources for How to Solve Problems: New Methods and Ideas

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From (1), (2), (3) we have k2 + 2 = 2a 2 − b 2 (6) (1), (2), (4) yield b ⋅ h = yx = = a4 − ( 2 (a 2 − 2 )( a 2 − k2 ) = + k 2 ) a 2 + 2k 2 (5) yields k + (7) − 2 k + b 2 = a 2 , because of (6) a2 2 2 2 2 then 2a − b − 2k + b = a thus k = 2 2 2 (6), (7), (8) yield bh = = a 4 − ( 2a 2 − b 2 ) a 2 + a4 = 4 4a 4 − 8a 4 + 4a 2 b 2 + a 4 −3a 4 + 4a 2 b 2 = 4 4 (8) Other Methods (6) yields ( k + ) 2 − 2k = 2a 2 − b 2 hence ( k + ) 2 53 = 2a 2 − b 2 + 2 a2 = 2 = 3a 2 − b 2 thus k + = 3a 2 − b 2 Substituting we obtain V= 1 −3a 4 + 4a 2 b 2 ⋅ 3a 2 − b 2 .

2 2 2 2 ( b + c ) + bc 2b − c ( b + c ) 2c − ( b + c ) b 2 ( b + c) b2 c2 + + = ( 2b + c )( b + 2c ) ( b − c )( 2b + c ) − ( b − c )( b + 2c ) 2 add ( b + c) b3 + 2b 2 c − 2c 2 b − c3 = + = ( 2b + c )( b + 2c ) ( b − c )( b + 2c )( 2b + c ) 2 ( b − c ) ( b2 + bc + c2 + 2bc ) ( b + c) = + = ( 2b + c )( b + 2c ) ( b − c )( b + 2c )( 2b + c ) 2 = 2b 2 + 2c 2 + bc + 4bc ( 2b + c )( b + 2c ) = =1 . 3. If x, y and z are positive real numbers such that x + y + z = 1 (1), prove that x 2 yz ≤ 1 64 (2). Solution From x + y + z = 1 we have y = 1 − x − z .

The total cost is 6 cents + 9 cents = 15 cents. Alternative Form of the Method Take sentences from the left column and insert the word "not" or "don't" between words. Such, sentences as the following will be created I do not open its two links I open not its two links I join them with not the end links of two other pieces, etc. The crucial idea is once more written down. All you have to do is to recognize it. It is easier to recognize than recall an idea. To solve a problem you go through an often long process of generating and evaluating ideas.

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