MATLAB: Plotting summation using for loop

for loopplotsummation notation

How would I plot values of i for 1,2,3,4,5 individually on the same graph?
 x = -pi:0.1:pi;
ye = cos(x);
n = length(x);
summe = 0.0;
for i = 1:n
    summe = summe +((-1).^(i)).*((x.^(2.*i))./(factorial(2.*i)));
end
hold on
plot (x, summe);
plot (cos(x), ye)

Best Answer

In previous question, as I told you, if you want your n vector as n=1:5, then you have to set your x vector as
x=-pi:pi/2:pi
and
n=1:length(x)
but it will be not wise to do this since when you plot, the figure will be a triangular shape. Therefore, you have to sample as many points as you can,
   x = -pi:0.1:pi
is a wise choice.
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