HP 17bii+ solver equation question  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: HP 17bii+ solver equation question (/thread108399.html) 
HP 17bii+ solver equation question  Don Shepherd  02172007 Well, with all the talk about the 17bii+, I went out and bought one today. By the way, Les, it was $80 with my Office Depot Star Teacher discount! Anyhow, why can't the Change Sign (+/) key be included in an equation?
Re: HP 17bii+ solver equation question  John Smitherman  02172007 Don / Les, what are your impressions of the keys on your new 17bii+'s? What are their serial numbers? Regards,
John
Re: HP 17bii+ keys  Don Shepherd  02172007 John, the keys seem fine, no skips or hardtopress.
Serial # CNA62900787.
Re: HP 17bii+ solver equation question  bill platt  02182007 There is no use for the "change sign" command in an equation. You aren't "changing" anything when you are writing an equation. Rather, you are laying down a string of characters that are interpreted based on context. Therefore the minus sign and the plus sign are all you needjust as is the case when writing with a pencil. For example: 23^2 is evaluated as 2 minus (3^2) 23^2 is evaluated as 2 plus (3^2) 23^2 is evaluated as 2 minus (3^2) and 2+(3^2) is also evaluated as 2 minus (3^2) If you want to do: (3)^2 You have to do just that! If you need to change anything, you have the cursor positioning aroows, and the < delete key.
I hope that helps!
Re: HP 17bii+ solver equation question  Don Shepherd  02182007 Yeah, thanks Bill. I'm making the transition between keystroke programming and equation "programming," and I'm learning the subtle differences between the two.
Re: HP 17bii+ keys  Bruce Bergman  02182007 Same here. I was a little concerned, what with the discussion, but so far the keys feel fine and haven't missed or doubled. The display is crystal clear  very impressive. I'm digging into the HP Solver on this thing which is  quite happily to my surprise  much more powerful than I thought. I'm going to have some fun with this one. :)
thanks,
Oh, my S/N is CNA 63401403 Edited: 18 Feb 2007, 1:22 a.m.
