how to write summation with limits?

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rohail khan
rohail khan 2018-4-4
回答： Birdman 2018-4-5
hi, How can I write the following functions in matlab?
  2 个评论
Birdman
Birdman 2018-4-5
There are many ways. What have you tried so far?
rohail khan
rohail khan 2018-4-5
Hi, I have tried the following
syms x
syms n
Mean=symsum(x,1,n)/n;
variance=symsum((x-Mean)^2,1,n)/n;

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回答（1 个）

Birdman
Birdman 2018-4-5
Try this:
syms mu variance x(i)
n=5;% you can change it
mu=symsum(x,i,1,n)/n
variance=symsum((x-mu).^2,i,1,n)/n

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