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Tutor
Posts: 6
Member Since: ‎11-11-2013
Message 1 of 6 (1,039 Views)

# HP Prime: How to Do Curl

I am trying to use the curl function on the Prime. The syntax given on p. 327 of the User Guide is

• curl([Expr1, Expr2, ..., ExprN], [Var1,Var2, ..., VarN])

and it gives the example

• curl([2*x*y,x*z,y*z],[x,y,z]) returns [z-x,0,z-2*x]

Notice that the syntax is a comma-separted list of expressions inside square brackets, followed by a comma, followed by a comma-separated list of variables. But when I try to enter the left brackets, the calculator inserts the matrix template, and I'm not able to enter the comma-separated lists. What is the exact key sequence to enter this example? Thanks.

# Re: HP Prime: How to Do Curl

Hi,

This is indeed odd. However, it can still be used by entering data in the top row only:

HTH

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PhD Student
Posts: 816
Member Since: ‎08-10-2010
Message 2 of 6 (1,026 Views)

## Re: HP Prime: How to Do Curl

Hi,

This is indeed odd. However, it can still be used by entering data in the top row only:

HTH

_________________________________________________________
Note: I do not work for HP, I just like playing with calculators :-)
Tutor
Posts: 6
Member Since: ‎11-11-2013
Message 3 of 6 (1,018 Views)

## Re: HP Prime: How to Do Curl

Yes, that's ugly, but it works. Thanks. I figured out that these also work:

1. Switch from textbook entry to algebraic entry. Then you can enter the example exactly as in the User Guide, including the commas.

2. Use braces. Those work, too, but I'm not sure if you're supposed to use braces for that.

PhD Student
Posts: 816
Member Since: ‎08-10-2010
Message 4 of 6 (995 Views)

## Re: HP Prime: How to Do Curl

Yes, that works too, thanks for mentioning.

By the way, there is a new firmware version available (5447, your calcutor was probably shipped with 5106). Update the Connectivity Kit on the PC (use "Check for updates") and then connect and update the calculator.

Happy calculating.

_________________________________________________________
Note: I do not work for HP, I just like playing with calculators :-)
Student
Posts: 1
Member Since: ‎01-23-2016
Message 5 of 6 (630 Views)

## Re: HP Prime: How to Do Curl

[ Edited ]

Well anyways how to enter square braces

i am very new to hp prime

if u can add the keystrokes it will be quite clear in finding curl

Professor
Posts: 2,537
Member Since: ‎02-17-2015
Message 6 of 6 (620 Views)

## Re: HP Prime: How to Do Curl

[ Edited ]

Hi!, fielboso:

Welcome, to Forum !.

For finding curl, you needed use CAS ... http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/archv021.cgi?read=251401

Press, ENTER key ...

Welcome, to this Forum !.

Thank you soo much, by trusting in HP !.

Top Contributor (Gold 2016) - Expert Provost, in Spanish Forum (http://h30467.www3.hp.com).

Kind Regards.
Maké.
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