19-Tanzanite

Solved

Mathcad Prime 12.0.0.0 sum wrong result

Hello,

Mathcad Prime 12.0.0.0 result:

Wolfram Mathematica result:

Best answer by AlanStevens

Note the lower index on the summation sign:

Could also have:

Clearly an error in the case of your original though, as the right-hand side can’t be a function of the summation index.

Answer

19-Tanzanite

Note the lower index on the summation sign:

Could also have:

Clearly an error in the case of your original though, as the right-hand side can’t be a function of the summation index.

23-Emerald IV

In Mathcad 11 (Not Prime 11) you cannot freely choose the format of upper and lower index of the summation.

You have either

(the '=’ is there and you have to fill all placeholders.

or

Where the lower index is expected to be a range.

So it gives:

and, respectively:

with i not defined. But with i defined as a range:

Success!
Luc

25-Diamond I

A little bit different in MC15

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