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matrix how to call just a column like A( : , 2 )
03-06-2020, 06:20 AM (This post was last modified: 03-06-2020 06:22 AM by resolved.)
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RE: matrix how to call just a column like A( : , 2 )
Thanks Victorbc -- I have the HP manual, where can I get the XCAS manual?? regarding the contextual help menu if you mean the help button on the HP Prime, still requires I know the command ahead of time.

I thought the problem was syntax, I am use to matlab & mathematica -- never even thought it would require a command

Thanks Tim -- didn't know there was a search feature in the Prime, found it in Tree and nowhere else, still took me half an hour to find the command -- deciphering the other commands along the way. I have used the catalog before, didn't know you could type more than one letter, but you have to be very quick on the keyboard, practice ahead of time, the best I got was three letters
"I do not know what could be done different here" -- standardization, I think is the answer, if every program used different key combinations for copy and paste, most people would just give up. Also in chapter 27 matrix should have all the commands related to that subject, I think is a no brainer.

just look at the Prime for columns in matrix, different command in Home than in CAS, if that isn't confusing, btw Thanks Carlos295z for mentioning that, in Home there is no command to search for, it is purely syntax and you can not search for that -- well, not that I know of, also using A(-2) to read column two is a secret code, not in the manual, not to be figured out, not to be found except for the kindness of others.

this one command has cost me four hours and the sad part of it is that in two weeks I will forget and it will cost me another hour trying to figure out how I did it before. I have bookmarked this site so I hope the journey will be much shorter, and thanks for caring, giving people who make life just a little bit easier
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RE: matrix how to call just a column like A( : , 2 ) - resolved - 03-06-2020 06:20 AM



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