How do you plot a summation function? please help.

nmax= 11. and z∈{0~+10}.

How do you plot this function? this is the inside of the Summation, if it is any helpful.

f = [(-1^k)*(x^(2*k+1))*2]/[(sqrt(pi))*(factorial(k))*(2*k+1)]

Now I need to do the summation and plot it from 0 to 11 with a z from 0 to 10.

Answer 1

[Walter Roberson]

f = @(x,k) ((-1.^k).*(x.^(2*k+1))*2)./((sqrt(pi))*(factorial(k)).*(2*k+1))
z = [0, 1, 2];
n = 0:11;
erfz = 2/sqrt(pi)*sum(f(z(:), n),2)

and now plot.