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how to plot the sum of series

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atalo lias 2020-7-9

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评论： Rik 2020-11-23

Considering the following summation, where z=1/2

d=1

how I can plot the p(d), for b=0 to inf or b=0 to 15??

Can anyone send me the code?

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madhan ravi 2020-7-9

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So the time I spent to help you is useless, correct? If you’re so afraid of your professor then why would you ask it in the first place?

Stephen23 2020-7-10

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在 MATLAB Online 中打开

Original question by atalo lias retrieved from Google Cache:

"how to plot the sum of series"

Considering the following summation, where z=1/2

d=1

how I can plot the p(d), for b=0 to inf or b=0 to 15??

Can anyone send me the code?

Original comment by atalo lias:

clear
z=1/2;
d=1;
for b=0:15
    p=((z^(b+d))*exp(-z))/factorial(b+d);
    
end
plot(b,p)

madhan ravi 2020-7-10

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Thank you Stephen!

Rena Berman 2020-7-22

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(Answers Dev) Restored edit

madhan ravi 2020-7-22

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编辑：madhan ravi 2020-7-22

Thank you Rena!

Rik 2020-11-23

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I restored your question from the copy that Stephen posted. Don't delete it again.

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madhan ravi 2020-7-9

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Use cumsum() and then plot(), you need to show some effort to get further help.

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madhan ravi 2020-7-9

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在 MATLAB Online 中打开

z = 1/2;
d = 1;
b = 0:15
p = cumsum((z.^(b+d) .* exp(-z)) ./ factorial(b+d));
plot(b,p)

madhan ravi 2020-7-9

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Replace inf with 1e6.

madhan ravi 2020-7-9

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编辑：madhan ravi 2020-7-9

在 MATLAB Online 中打开

 z = 1/2;
 d = 1;
 k = 0;
 b = 0:15
 p = zeros(numel(b), 1);
 for k = 1:numel(b)
     p(k) =((z^(b(k)+d))*exp(-z))/factorial(b(k)+d);
 end
 plot(b,cumsum(p))

madhan ravi 2020-7-9

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编辑：madhan ravi 2020-7-9

在 MATLAB Online 中打开

 z = 1/2;
 d = 1;
 b = 1:15; % start from number other than zero 
 m = 3/2;
 p = zeros(numel(b), 1);
 for k = 1:numel(b)
     p(k) =(((z^(b(k)+d))*exp(-z))/factorial(b(k)+d))*((m^(b(k)+d)*exp(-m))/b(k));
 end
 plot(b,cumsum(p))