TRN() in Home?

[Helge Gabert]

TRN() doesn't return the correct answer in Home, e.g.

[[2 1+i][1-i 3]] returns [[2 1-i][1+i 3]], which is indistinguishable from transpose().

CAS returns the transpose with complex conjugates, [[2 1+i][1-i 3]].

Maybe this was fixed in the Jan 2020 firmware; I just realized I'm still running Oct 2018.

[victorvbc]

(05-19-2020 02:57 PM)Helge Gabert Wrote:  TRN() doesn't return the correct answer in Home, e.g.

[[2 1+i][1-i 3]] returns [[2 1-i][1+i 3]], which is indistinguishable from transpose().

CAS returns the transpose with complex conjugates, [[2 1+i][1-i 3]].

Maybe this was fixed in the Jan 2020 firmware; I just realized I'm still running Oct 2018.

I can confirm that it doesn't return the conjugate transpose in home, even in the latest firmware, with complex turned on in both home and cas. I don't know if it's supposed to be that way.

If you use CAS.TRN() in home it works though.

   

[Helge Gabert]

Thanks for the info!

Yes, CAS.TRN() also works with the Oct 2018 firmware in Home. Need to remind myself to use that in a Home program . . .

[ijabbott]

I think it may be a bug inherited from the HP 39gII where TRN behaves incorrectly as in the HP Prime's Home mode. On the older HP 39gs, TRN does a complex conjugate transpose as described in the manual.