I have tried to solve this summation with symbolic calculation but it does not give me an answer:
If I give a value to n, I get an answer:
Which keyword or modifier should I use to get a response without giving a numeric value to n??
Would appreciate any help to solve this problem.
Yes, the simplification is correct but Mathcad's abilities are unfortunately very limited when it comes to symbolic calculations. Especially when compared to more advanced systems like Mathematica or Maple or even whem compared to Uncle Wolfram (limited mathematica engine):
I am surprised that even Luc did not succeed as he is using mathcad 11 which includes an older version of Maple to do the symbolic calculations.
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