Warning: Error updating FunctionLine

I have written 3 simple lines of code to plot a function. Here is my code:

n=2;
omega=@(r) log(factorial(r+n-1))-log(factorial(r))-log(factorial(n-1));
fplot(omega,[0 150],'b')

When I plot it, it gives me the following error message: "Warning: Error updating FunctionLine".

In case this information is useful, the function is the natural log of the multiplicity of an Einstein Solid. The multiplicity is given by . Where n is the number of oscillators and r is quanta of energy. When we take natural log, we get . I checked in the command window, and the largest factorial that MATLAB can calculate is the factorial of 170, but it never has to calculate the factorial of a number greater than 170 while .

Answer 1

[Walter Roberson]

factorial is only for integers but fplot uses nonintegers

[Walter Roberson]

You could recode in terms of gamma