This commit is contained in:
Ingy döt Net 2013-04-10 21:29:02 -07:00
parent 764da6cbbb
commit db842d013d
19005 changed files with 197040 additions and 7 deletions

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> 5!;
120

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RecFact := proc( n :: nonnegint )
if n = 0 or n = 1 then
1
else
n * thisproc( n - 1 )
end if
end proc:

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> seq( RecFact( i ) = i!, i = 0 .. 10 );
1 = 1, 1 = 1, 2 = 2, 6 = 6, 24 = 24, 120 = 120, 720 = 720, 5040 = 5040,
40320 = 40320, 362880 = 362880, 3628800 = 3628800

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IterFact := proc( n :: nonnegint )
local i;
mul( i, i = 2 .. n )
end proc:

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> seq( IterFact( i ) = i!, i = 0 .. 10 );
1 = 1, 1 = 1, 2 = 2, 6 = 6, 24 = 24, 120 = 120, 720 = 720, 5040 = 5040,
40320 = 40320, 362880 = 362880, 3628800 = 3628800