Knigh4321 Posted February 4, 2003 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....
fafalone Posted February 4, 2003 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
fafalone Posted February 10, 2003 Posted February 10, 2003 Only this isn't dependent on the numbers being integers
NSX Posted February 11, 2003 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...?
NSX Posted February 12, 2003 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?
fafalone Posted February 12, 2003 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.
NSX Posted February 12, 2003 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?
fafalone Posted February 12, 2003 Posted February 12, 2003 fractions are representations of decimals.
NSX Posted February 16, 2003 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.?
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