For/if loop for adding up only odd numbers

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Dobs
Dobs 2021 年 11 月 9 日
編集済み: Yongjian Feng 2021 年 11 月 9 日
Hi,
We're supposed to write a loop (it must be a loop!) to calculate the following expression (see attached image). We're supposed to only sum the values that correspond to odd values of n.
This is what I got so far but I don't know how to specifiy that only only odd values for n are added.
for n = 1:100
c(n) = (1/(n^2));
sum(c);
end
Can anybody help me with that please?
Thanks,
Debbie

回答 (1 件)

Yongjian Feng
Yongjian Feng 2021 年 11 月 9 日
編集済み: Yongjian Feng 2021 年 11 月 9 日
You mean this?
for n = 1:100
if mod(n,2) == 1
c = (1/(n^2));
sum(c);
end
end
Refer to this for how to compute remainder in matlab.
  2 件のコメント
Yongjian Feng
Yongjian Feng 2021 年 11 月 9 日
Little bit different for negative value. Same for positive:

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