half factorial

what is half factorial? (1/2)!=? via. Gamma function

What Is The Factorial Of 1/2? SURPRISING (1/2)! = (√π)/2

Half factorial using the gamma function

One Half Factorial ? (1/2)!

Why is Pi here? | Half factorial without Gamma function #SoME3

Fractional Factorial Design (DoE) Simply explained

What is the factorial of -½?

1/2 Factorial, YES, Half Factorial

Fractional Factorial Design, Part 1

Minus half factorial??? Yes, let's calculate this thing.

Fractional Factorial Designs, Part 2

DOE-5: Fractional Factorial Designs, Confounding and Resolution Codes

How to Take the Factorial of Any Number

Factorial vs fractional vs response surface designs | when to use what?

Negative half factorial

Factorial Math Tricks #shorts

Generalized negative half factorial

Can we find a value for a half factorial???

What is a Half Derivative?

Generalized half factorial

Zero Factorial - Numberphile

I Found Out How to Differentiate Factorials!

Fractional Factorial Design in Minitab

Half Factorial proof using the Gamma Function - (-1/2)!=sqrt(pi)