Problems with signs law and other arithmetic operators

04072015, 04:36 PM
(This post was last modified: 04072015 09:49 PM by compsystems.)
Post: #1




Problems with signs law and other arithmetic operators
HPPRIME
+2/+2 => 1 ok +2*+2 => 4 ok +2*2 => 4 ok 2*2 => 4 ok 5+6 => 1 ok 5+6 => 1 ok 5++6 // error => 11 56 // error => 11 In MATLAB ok >> +2/+2 +2*+2 2*2 5+6 5+6 5++6 56 ans1 = 1 ans2 = 4 ans3 = 4 ans4 = 1 ans5 = 1 ans6 = 11 ans7 = 11 

04072015, 04:52 PM
Post: #2




RE: Problems with signs law and other arithmetic operators
Don't know why you wanted to try these expressions  HP 50G returns same results as you quote for MATLAB.


04072015, 04:56 PM
Post: #3




RE: Problems with signs law and other arithmetic operators
And so does the Prime in textbook and Algebraic modes.


04072015, 05:09 PM
Post: #4




RE: Problems with signs law and other arithmetic operators
(04072015 04:36 PM)compsystems Wrote: 5++6 // error I get correct results for the two expressions that you've shown as error. 5+ +6 displays in history as 5+6, and Ans(1) = 11. (Note I inserted a space between the two plus signs, to clarify that the 6 has a positive symbol). 56 Uses the subtraction sign after the 5 and the negative sign preceding the 6 to also result in Ans(1)=11. It's not clear in this posting that the 6 has the negation symbol, from the [+/] button, for example. However, the Prime display shows that the negation symbol is smaller than the minus symbol. 

04072015, 05:51 PM
Post: #5




RE: Problems with signs law and other arithmetic operators
(04072015 05:09 PM)DrD Wrote:(04072015 04:36 PM)compsystems Wrote: 5++6 // error Not so on 50G  between ' ' two subtracts are allowed eg '56'. 

04072015, 06:13 PM
Post: #6




RE: Problems with signs law and other arithmetic operators  
04072015, 09:40 PM
(This post was last modified: 04072015 09:54 PM by compsystems.)
Post: #7




RE: Problems with signs law and other arithmetic operators
5+ SPC +6 => 11 OK
5 SPC 6 => 11 OK Where is the information to use the +, , ++,  operator?, some of my classmates who bought the hpprime are disappointed that no information as hpprime works, without documentation we have to guess. Please HPPrime TEAM complete catalog help NOW with − as sign /!\ ASC("−") = 8722 the command should be called Unicode() and nonASCII ASC() −−6 => 6 ok −+6 => 6 ok 5−6 => 11 ok 5▶x x++ => 6 ok x => 5 ok x => ERROR ++x => ERROR And not say what type of error, it is necessary to clearly define the errors displayed on screen, not only display an icon of (X) with the input typed in the input line. All power calculator is lost in these bit details 

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