Possible Mathcad error

[gatlas]

Team,

Please see this file. I believe Mathcad gives the wrong answer for the indefinite integral of ((-1)^x)dx.

Let me know what you think.

Regards,

Glen

[LucMeekes]

I guess you're right:

What version of Prime are you using?

Success!
Luc

[gatlas]

Luc,

I'm using Mathcad Prime 11.

Regards,

Glen

Glen Atlas, MD, MSc

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Professor

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Rutgers New Jersey Medical School

Newark, NJ

and

Adjunct Clinical Professor

Dept. of Biomedical Engineering

Stevens Institute of Technology

Hoboken, NJ

[Werner_E]

Yes, I would call it a bug in the symbolic engine and its already present in Prime 9 (can't test P8 or P7 as I don't have those versions installed).

Modifiers 'rectangular' or 'complex' don't help and also not writing it as a definite integral

and also

As Luc has shown it works OK in MC11 (with Maple as symbolic engine).

It also works OK in MC15 (with muPad as symbolic engine)

(The definite integral differs just by a constant i/pi which is OK)