For/if loop for adding up only odd numbers

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Dobs
Dobs 2021-11-9
编辑： Yongjian Feng 2021-11-9
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

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回答（1 个）

Yongjian Feng
Yongjian Feng 2021-11-9
编辑：Yongjian Feng 2021-11-9
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.

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