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Rank: Advanced Member Groups: Registered, Advanced Member Joined: 13/01/2012(UTC) Posts: 2,647 Location: Italy Was thanked: 1329 time(s) in 875 post(s)
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Hello Jean, About the "n - not defined", it is because you have to nest the second sum in the first, otherwise n is (correctly) undefined. Other things to check later... Thank you for the works as well as the references! While written correctly, you should be able to highlight the outer sum argument like in this picture: |
If you like my plugins consider to support SMath Studio buying a plan; to offer me a coffee: paypal.me/dcprojects |
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Rank: Guest
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Joined: 04/07/2015(UTC) Posts: 6,866 Was thanked: 981 time(s) in 809 post(s)
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