
complex analysis - Why is $i! = 0.498015668 - 0.154949828i ...
Why is this? I know what a factorial is, so what does it actually mean to take the factorial of a complex number? Also, are those parts of the complex answer rational or irrational? Do …
Defining the factorial of a real number - Mathematics Stack …
Oct 19, 2016 · I'm curious, how is the factorial of a real number defined? Intuitively, it should be: x! = 0 if x ≤ 1 x! = ∞ if x> 1 Since it would be the product of all real numbers preceding it, …
An easier method to calculate factorials? - Mathematics Stack …
Jun 5, 2021 · To find the factorial of a number, n n, you need to multiply n n by every number that comes before it. For example, if n = 4 n = 4, then n! = 24 n! = 24 since 4 ⋅ 3 ⋅ 2 ⋅ 1 = 24 4 ⋅ 3 ⋅ 2 …
What does the factorial of a negative number signify?
Nov 29, 2021 · So, basically, factorial gives us the arrangements. Now, the question is why do we need to know the factorial of a negative number?, let's say -5. How can we imagine that there …
factorial - Why does 0! = 1? - Mathematics Stack Exchange
Possible Duplicate: Prove 0! = 1 0! = 1 from first principles Why does 0! = 1 0! = 1? All I know of factorial is that x! x! is equal to the product of all the numbers that come before it. The product …
What is the term for a factorial type operation, but with …
He describes it precisely for the purpose of contrasting with the factorial function, and the name seems to be a play on words (term-inal rather than factor-ial).
Factorial, but with addition - Mathematics Stack Exchange
Apr 21, 2015 · Factorial, but with addition [duplicate] Ask Question Asked 11 years, 6 months ago Modified 5 years, 10 months ago
Any shortcut to calculate factorial of a number (Without calculator …
Jun 29, 2015 · Since the factorial function is defined recursively, (n + 1)! = n! ⋅ (n + 1), your question boils down to whether or not the recurrence relation has a closed form solution, which …
How to find the factorial of a fraction? - Mathematics Stack …
And 0! = 1. However, this page seems to be saying that you can take the factorial of a fraction, like, for instance, 1 2!, which they claim is equal to 1 2√π due to something called the gamma …
Definition of a Factorial - Mathematics Stack Exchange
Sep 10, 2020 · As I studied, I found factorials for positive reals and negative fractions. But the integral with which we define factorial falls flat on the negative integers. why is that we can find …