Local var in Int and Sum

What is more correct - Mathcad or Maple (SMath)

Mathcad Mathcad

Maple Maple

25-Diamond I

@ValeryOchkov wrote:

What is more correct - Mathcad or Maple (SMath)

maple

Author

24-Ruby IV

-4949 is correct too?

25-Diamond I

@ValeryOchkov wrote:

-4949 is correct too?

No! Here all these programs are not following the math definition of a sum.

There is a difference between a programmers loop and the sum symbol in mathematics.

In mathematics when the upper value is lower than the "start" value its called the "empty sum" and its value is zero!

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