1. ## Plotting graph

Hello,
How to plot graph of y=x! in r along with all the points between x! and (x+1)!? For example If i want to know 5.2!, I should know it by seeing the graph. (5.2!=169.406099462)

2. ## Re: Plotting graph

Originally Posted by Vinod
Hello,
How to plot graph of y=x! in r?
Please clarify the notation. What is $x!~?$ Is that simply a punctuation or what is it a factorial?
What does "in r" mean?

3. ## Re: Plotting graph

Originally Posted by Plato
Please clarify the notation. What is $x!~?$ Is that simply a punctuation or what is it a factorial?
What does "in r" mean?
Hello, It means x factorial. "r" means r software.

4. ## Re: Plotting graph

Strictly speaking, x! is only defined for x a non-negative integer. To extend to non-integer values you should use the "gamma function": $\displaystyle \Gamma(x)= \int_0^\ifty z^{x- 1}e^{-z}dz$. For n a positive integer, $\displaystyle \Gamma(n)= (n- 1)!$. The gamma function is still not defined for x a negative integer but is defined for all other numbers.