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[jte]

(09-18-2018 10:15 PM)ammonteir Wrote:  I usually use the HOME view instead of CAS view because of the RPN. But I found a wrong answer in the HOME view for a 2x2 inverse matrix and couldn’t figure out why, maybe it’s a bug. The matrix is:

|-270510 510|
|510 -2710|

inverse matrix at HOME: (That’s a wrong answer)

|-3.69803308307E-6 0|
|0 -3.69134660258E-4|

inverse matrix at CAS: (That’s a correct answer)

|-3,69803308307E-6 -6.95939805301E-7|
|-6.95939805301E-7 -3.69134660258E-4|

This difference lead me to a wrong answer in a Electric Circuit analysis.

Thanks for posting. I’ve created a ticket for this in the bug tracker I’ve set up.