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enter image description here

n=odd number

I would like to select an operation and graph by selecting the odd numbers in the infinite area. Please, help me.

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    $\begingroup$ Please post the code, not pictures of it $\endgroup$
    – Stitch
    Mar 30, 2017 at 1:23
  • $\begingroup$ Related (39316) $\endgroup$
    – Stitch
    Mar 30, 2017 at 1:46

1 Answer 1

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Is this what you seek?

expr = With[{n = 2 n + 1}, 2/(I π n) E^(I π n t)];

F1 = Sum[expr, {n, -∞, ∞}]

Plot[F1, {t, -2 Pi, 2 Pi}]
(2 I (ArcTanh[E^(-I π t)] - ArcTanh[E^(I π t)]))/π

enter image description here

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  • $\begingroup$ It was a lot of help.Thank you. $\endgroup$ Mar 30, 2017 at 5:23

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