undefined function or variable k symsum

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MathWorks Support Team
MathWorks Support Team am 23 Apr. 2018
Beantwortet: MathWorks Support Team am 23 Apr. 2018
Why am I receiving an error when using the "symsum" function?
error: Undefined function or variable 'k'.

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MathWorks Support Team
MathWorks Support Team am 23 Apr. 2018
This error is because the symbolic variable, 'k', needs to be created before using this function.
>> syms k

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