HP Forum Archive 16

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50g matrix writer Message #1 Posted by Shu Pong on 18 Nov 2006, 7:50 p.m. I just got a new 50g and I am using the matrix writer to input the numbers into the linear system solver. In my 48g, if I wanted to use a number out of the stack I would use the from stk soft menu key and it would take me back to the stack where I could select the number I wanted and hit echo and there it was in the matrix. On the 50g I can only find a "to stk" but there is no "from stk" so how do you solve systems of equations using numbers from the stack. I already tried shift "to stk" and it works but it will only take the number 1 in the stack, it won't let you pick different numbers from the stack. Anyone know how to do this?

Re: 50g matrix writer Message #2 Posted by James M. Prange (Michigan) on 18 Nov 2006, 8:20 p.m., in response to message #1 by Shu Pong Press the HIST (M) key.

Re: 50g matrix writer Message #3 Posted by Crawl on 18 Nov 2006, 9:41 p.m., in response to message #2 by James M. Prange (Michigan) Or just tap the "up" arrow button. I wish (although it's not the most important issue in the world) they hadn't wasted a face button on "HIST" considering how redundant it is.

Re: 50g matrix writer Message #4 Posted by James M. Prange (Michigan) on 18 Nov 2006, 10:06 p.m., in response to message #3 by Crawl Quote: Or just tap the "up" arrow button. From the standard stack display, yes, but this doesn't give me access to the "interactive stack" from "special environments" such as the matrix writer or equation writer. Quote: I wish (although it's not the most important issue in the world) they hadn't wasted a face button on "HIST" considering how redundant it is. I agree. Perhaps it's more important in ALG mode? Regards, James

Re: 50g matrix writer Message #5 Posted by Chuck on 22 Nov 2006, 6:16 p.m., in response to message #4 by James M. Prange (Michigan) BINGO. Played around and found out how. In the matrix writer press NXT to get to the command ->STK. However, hold down the orange right shift key and press the ->STK at the same time. Voila. CHUCK

Re: 50g matrix writer Message #6 Posted by Shu Y Pong on 23 Nov 2006, 12:46 a.m., in response to message #5 by Chuck Yeah I already figured that out. You can use either shift button, you can hold it down or just push and release, you always get the same result, just the number 1 line of the stack. The HIST button is what I was looking for. But thanks.

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