Every so often, MAthcad 15 surprises me!

Best answer by LucMeekes

Mathcad 11 / Maple:

LM_20190113_Mathcad 15.png

Luc

Answer

23-Emerald IV

Mathcad 11 / Maple:

LM_20190113_Mathcad 15.png

Luc

25-Diamond I

Looks like Maple in MC11 ignores the possibility of a being zero. In this case the result of Maple in MC11 is wrong!

Admittedly MC15's answer without this specific "assume" is wrong in the same sense, too 🙂

23-Emerald IV

Maybe it's not so wrong...

LM_20190113_Mathcad 151.png

Note that the taylor-series of exp(a*x) is 1+ a*x+a^2*x^2/2+...

so in (exp(a*x)-1)/a, the 1 is subtracted out by -1,the next term divided by a leaves x, and the following terms all become 0 when a=0.

Luc

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