nu trebuie sa spunem cu text neaparattextul face diferenta intre exercitiu matematic si problema matematica

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Note added at 12 hrs (2009-05-11 09:13:40 GMT)
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Ai putea sa spui problema de logica matematica.

Example

A mathematical problem in mathematical notation:

Solve for J:

J = A − 20
J + 5 = (A + 5)/2

might be presented in a word problem as follows:

John is twenty years younger than Amy, and in five years' time he will be half her age. What is John's age now?

The answer to the word problem is that John is 15 years old. While the answer to the mathematical problem is J = 15 (and A =35).

[edit] Structure

Word problems can be examined on three levels:[3]

Level a: the verbal formulation;
Level b: the underlying mathematical relations;
Level c: the symbolic mathematical expression.

Word problems can be further analysed by examining their linguistic properties (Level a), their logico-mathematical properties (Level b) or their symbolic representations (Level c). Linguistic properties can include such variables as the number of words in the problem or the mean sentence length.[4] The *****logico-mathematical properties *****can be classified in numerous ways, but one such scheme is to classify the quantities in the problem (assuming the word problem is primarily numerical) into known quantities (the values given in the text of the problem), wanted quantities (the values that need to be found) and auxiliary quantities (values that may need to be found as intermediate stages of the problem).[4]

http://en.wikipedia.org/wiki/Word_problem_(mathematics_educa...

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Note added at 12 hrs (2009-05-11 09:22:50 GMT)
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Cu placere! Spor la treaba.