Using the function symsum.

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Shane Kosir
Shane Kosir 2016-10-25
回答： Walter Roberson 2016-10-25
I use symsum(k^2,k,0,4) in the command window but it brings back "undefined function or variable "k"". What else do I need to do?

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回答（1 个）

Walter Roberson
Walter Roberson 2016-10-25
syms k
symsum(k^2,k,0,4)

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