13.07.2015 Views

Mathematical Methods for Physics and Engineering - Matematica.NET

Mathematical Methods for Physics and Engineering - Matematica.NET

Mathematical Methods for Physics and Engineering - Matematica.NET

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

27.4 NUMERICAL INTEGRATIONhas become attached to methods based on r<strong>and</strong>omly generated numbers – inmany ways come into their own when used on multidimensional integrals overregions with complicated boundaries.It goes without saying that in order to use r<strong>and</strong>om numbers <strong>for</strong> calculationalpurposes a supply of them must be available. There was a time when they wereprovided in book <strong>for</strong>m as a two-dimensional array of r<strong>and</strong>om digits in the range0 to 9. The user could generate the successive digits of a r<strong>and</strong>om number ofany desired length by selecting their positions in the table in any predetermined<strong>and</strong> systematic way. Nowadays all computers <strong>and</strong> nearly all pocket calculatorsoffer a function which supplies a sequence of decimal numbers, ξ, that,<strong>for</strong>allpractical purposes, are r<strong>and</strong>omly <strong>and</strong> uni<strong>for</strong>mly chosen in the range 0 ≤ ξ

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!