Syntax error... or am I doing something wrong? - Printable Version +- HP Forums ( https://www.hpmuseum.org/forum)+-- Forum: HP Calculators (and very old HP Computers) ( /forum-3.html)+--- Forum: HP Prime ( /forum-5.html)+--- Thread: Syntax error... or am I doing something wrong? ( /thread-6297.html) |

Syntax error... or am I doing something wrong? - farefernandez - 05-24-2016 06:04 AM
I don't seem to be able to enter a number containing fractions in polar coordinates. Something as simple as 1/2v50 (v would be the angle symbol). raises a syntax error. I've tried with different combination of parenthesis... but it still get a syntax error. Am I doing something wrong? Thanks! RE: Syntax error... or am I doing something wrong? - Aries - 05-24-2016 07:56 AM
I suppose this happens in the HOME, in the CAS mode does work fine. Best, Aries ;-) RE: Syntax error... or am I doing something wrong? - DrD - 05-24-2016 09:44 AM
Have you tried using the [Shift][X] (the multiply key), for the angle symbol? 1/(2∡50) ==> Result(angle mode). -Dale- RE: Syntax error... or am I doing something wrong? - farefernandez - 05-24-2016 12:27 PM
(05-24-2016 09:44 AM)DrD Wrote: Have you tried using the [Shift][X] (the multiply key), for the angle symbol? The problem is not the angle symbol. Basically I can enter: 1∡90 but not: 1/2∡90 Or even: 10^2∡90 In Cas mode it seems to work but i wonder why it doesn't in Home... Thanks! RE: Syntax error... or am I doing something wrong? - DrD - 05-24-2016 01:43 PM
When the polar value is completely represented, in the two examples you provided, they did work in [Home] r10077. Copy/paste separates the angle parameter, and makes it look like: 1/2 ∡90, and 10^2 ∡90; instead of 1/(2∡90), and 10^(2∡90). That's probably not the issue, but the examples paste into the command line separating the angle, which, coincidentally, DOES cause a syntax error. If the polar value is enclosed in parentheses, (not strictly required), there should be no issue (I hope!). RE: Syntax error... or am I doing something wrong? - Tim Wessman - 05-24-2016 02:33 PM
(05-24-2016 06:04 AM)farefernandez Wrote: Something as simple as How is that simple? Is that (1/2)<90? 1/(2<90)? (1/2)*1<90? When you start getting even more complicated things, how does the angle symbol behave in terms of order of operations? RE: Syntax error... or am I doing something wrong? - informach - 05-24-2016 03:22 PM
Hi!: See, the attached images. You needed configure, in HOME ... Degrees a+bi or (a,b) ... is same Then, write ... (1/2,50) ... With Shift and * X (angle symbol), then ... RE: Syntax error... or am I doing something wrong? - leprechaun - 05-25-2016 05:10 AM
In cas something like 1<pi returns -1+1.0780...E-14. 1<(pi/2) returns 5.3903...E-15+i I am surprised to see these results in the cas. I always thought that the cas would treat everything symbolically so that pi would be recognized. Is there an explanation for these results and/or would it be a problem to catch such special cases? RE: Syntax error... or am I doing something wrong? - informach - 05-25-2016 01:56 PM
Hi!, leprechaum: With complex (a+bi), or (a,b) and in, degrees (but, not CAS) ... (1,PI) = 1+PI*i (1,PI/2) = 1+PI/2*i See, the left image ... In Polar, CAS and degrees. See, the other image ... Note: This is checked with Wolfram Alpha, too. Kind Regards. informach |