I'd like to plot the following function in Wolfram Alpha (n is a positive integer variable):
f = n * (2^(-n) - 1)
In Matlab the corresponding function is stem
How can I specify that n is a positive integer variable?
Thank you for your time.
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Jimi
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Gennaro Arguzzi
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2 Answers
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You can use discrete plot:
discrete plot f = n * (2^(-n) - 1) for 0 < n <= 10
relatively_random
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You can append a plot keyword at the beginning of your function. So, in your case, it would be something like this
plot f = n * (2^(-n) - 1) with n > 0
which will give the following result
Jimi
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Hello @FrancescoGimignano, thank you for your reply. I'm looking for a way to plot discete domain. – Gennaro Arguzzi Feb 17 '20 at 16:50
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Check the edit, if I understand correctly you want something like this – Jimi Feb 18 '20 at 08:09
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Hi @FrancescoGimignano, the plot i'm looking for is like "stem" in Matlab, it's a series of stems. – Gennaro Arguzzi Feb 18 '20 at 08:19
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Ah, that wasn't in the question. In that case I don't know if wolfram supports such operation :/ – Jimi Feb 18 '20 at 08:34