Knigh4321 Posted February 4, 2003 Share Posted February 4, 2003 In some area of math there is a capital PI which denotes something which I don't know. Can anyone help? and it's not pi(n)= all primes under n.... Link to comment Share on other sites More sharing options...
fafalone Posted February 4, 2003 Share Posted February 4, 2003 That's a product... like sigma ( :lsum: ), only you multiply each number instead of adding :ucpi: x from x=1 to 4 would be 1*2*3*4 Link to comment Share on other sites More sharing options...
NSX Posted February 10, 2003 Share Posted February 10, 2003 Cool, just like factorials! Link to comment Share on other sites More sharing options...
fafalone Posted February 10, 2003 Share Posted February 10, 2003 Only this isn't dependent on the numbers being integers Link to comment Share on other sites More sharing options...
NSX Posted February 11, 2003 Share Posted February 11, 2003 Originally posted by fafalone Only this isn't dependent on the numbers being integers So do you specify the number of decimals places, or...? Link to comment Share on other sites More sharing options...
fafalone Posted February 11, 2003 Share Posted February 11, 2003 what? Link to comment Share on other sites More sharing options...
NSX Posted February 12, 2003 Share Posted February 12, 2003 well, when you say that the numbers do not necessariliy have to be integers, I assume that you mean they can be any real number. Is this what you mean? Link to comment Share on other sites More sharing options...
fafalone Posted February 12, 2003 Share Posted February 12, 2003 Well they could be any imaginary number too, but then the result would be imaginary. And the range is usually an integer, but you could use 1/2 * 1/3, etc, whereas you could't do that with a factorial. Link to comment Share on other sites More sharing options...
NSX Posted February 12, 2003 Share Posted February 12, 2003 Originally posted by fafalone Well they could be any imaginary number too, but then the result would be imaginary. And the range is usually an integer, but you could use 1/2 * 1/3, etc, whereas you could't do that with a factorial. oh..I see, fractions. So does that exclude decimals? Link to comment Share on other sites More sharing options...
fafalone Posted February 12, 2003 Share Posted February 12, 2003 fractions are representations of decimals. Link to comment Share on other sites More sharing options...
NSX Posted February 16, 2003 Share Posted February 16, 2003 Originally posted by fafalone fractions are representations of decimals. What about irrational numbers? Like 2^1/2, 3^1/2, etc.? Link to comment Share on other sites More sharing options...
NSX Posted February 26, 2003 Share Posted February 26, 2003 :feedback: Link to comment Share on other sites More sharing options...
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