50G Num solver data entry  Printable Version + HP Forums (https://archived.hpcalc.org/museumforum) + Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum1.html) + Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum2.html) + Thread: 50G Num solver data entry (/thread144356.html) 
50G Num solver data entry  vq  12032008 I'm new to the 50G, so maybe a basic question. Re: 50G Num solver data entry  George Bailey (Bedford Falls)  12032008 When you're in NUM.SLV entering numeric values for the known variables, you have to enter calculations without pressing the ENTER key, because the ENTER key would interrupt the calculation and thus just ENTER the first value. To accomplish this you would proceed like so. Say, you have the equation x+5y=z, the entry form will look like this: Eq: 'X+5*Y=Z' X: Y: Z: You now want to calculate the X entry from X=4*5. To do so you edit the X: field and write X: 4 [SPC] 5 * [ENTER] The [SPC] will separate the 4 and 5 like the [ENTER] key would do in a normal RPN calculation. The last [ENTER] will then complete the entry after calculating the result. If you want to enter more complex stuff for the variables like SIN(.4) in algebraic or .4 SIN in RPN mode, you have to make sure that you switched to approximate mode before, or else you'll get an INVALID OBJECT TYPE error. ENTRY is explained on page 16 of the "HP 49G+ Advanced User's Reference Manual"
Quote:The difference being that if you edit an algebraic object like '3+4' and hit SIN, then SIN will come out when in PRG mode and SIN() while in ALG PRG mode.
Edited: 3 Dec 2008, 12:43 p.m.
Re: 50G Num solver data entry  Hal Bitton in Boise  12032008 Hello vq,
With the numeric solver input form on the screen and the desired input field selected, hit "next" to get to the next page of soft key labels. There you will find a "calc" softkey label (2nd from left). Hitting the associated softkey (f2) will take you to a stack environment where you can calculate your input. When finished, hit the "OK" softkey. (If, during the course of your calculation you have navigated away from these softkey labels, you will be prompted to return to them by hitting right shift "cont" (ON key).
An alternate method I sometimes like to employ is to build my equation to be solved on the main stack before even going to the solver. Then copy it, go to the solver, highlight the "eq" field, paste, and enter. One more thing, since you're new to the 50G...don't forget it's got a nifty (and powerful) symbolic solver as well. To use it, put your equation in level 2, the variable to be solved for in level 1, hit right shift "s.slv" (7 key) and use the "solve" softkey on the far right. Remember the symbolic solver won't work for all equations.
Re: 50G Num solver data entry  George Bailey (Bedford Falls)  12032008 Hal, very nice! Never knew that!
Regards, Edited: 3 Dec 2008, 4:05 p.m.
Re: 50G Num solver data entry  vq  12032008 Thanks a lot, there's really much to learn. These handson tips are very helpful (though hard to find/hidden? in the manuals for me).
Re: 50G Num solver data entry  Marcus von Cube, Germany  12042008 vq, the Internet is the manual...
