Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#1 Re: Help Me ! » Factorials » 2013-12-16 10:17:52

I already know that, but I don't know what ∫ is.

#2 Help Me ! » Factorials » 2013-12-16 10:06:21

calculator
Replies: 5

My question is how do you find the factorial of any number?  I already know how to find it with counting numbers, but how about negative numbers, or decimals?(I know -0.5!=√π, but it doesn't help with (7/9)!)

#3 Dark Discussions at Cafe Infinity » Divide by zero » 2013-11-06 11:36:12

calculator
Replies: 5

Do you ever think there would be a second imaginary number?  A one about x/0?  There could be one, since √-1 was once thought to be impossible.

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