HP Forum Archive 21

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HP Prime: Vector field CURL(). How-to... Message #1 Posted by Chris Tvergard on 26 Sept 2013, 2:03 p.m. In the manual p. 327 is an example of the CURL function in CAS mode. This is the error I get when I try to reproduce: "curl([[2*x*y,x*z,y*z],[x,y,z]]) Error:"curl([[2*x*y,x*z,y*z],[x,y,z]]) Error: Bad Argument Type" Bad Argument Type" What am I doing wrong? Thanks in advance, Chris

Re: HP Prime: Vector field CURL(). How-to... Message #2 Posted by Han on 26 Sept 2013, 2:08 p.m., in response to message #1 by Chris Tvergard Is that a typo w/ respect to the open double quote without a corresponding ending one? 1. curl is presumably a symbolic calculation, so you should be in CAS mode 2. If you are using RPN mode, that would also affect the behavior.

Re: HP Prime: Vector field CURL(). How-to... Message #3 Posted by Chris Tvergard on 26 Sept 2013, 5:29 p.m., in response to message #2 by Han Han, Thanks for your response. I finally figured it out. (See below.) Chris

Re: HP Prime: Vector field CURL(). How-to... Message #4 Posted by fhub on 26 Sept 2013, 2:16 p.m., in response to message #1 by Chris Tvergard Quote: This is the error I get when I try to reproduce: "curl([[2*x*y,x*z,y*z],[x,y,z]]) One pair of brackets too much, it should be: curl([2*x*y,x*z,y*z],[x,y,z]) And it only works in CAS mode. Franz

Re: HP Prime: Vector field CURL(). How-to... Message #5 Posted by Chris Tvergard on 26 Sept 2013, 3:55 p.m., in response to message #4 by fhub Franz, You were right with the double parentheses. That solved it. I entered the function as curl([],[]) first and then filled out the two single line matrices individually. Thanks for your help. I can now move on to the Laplace transform after half a day lost. Chris

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