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Student
Posts: 1
Member Since: ‎06-09-2014
Message 1 of 4 (600 Views)
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HP 50g - graph of library function

Hello,

 

I try to graph e.g. the distribution function UTPN (cumulative normal distribution) with two parameters fixed and the third as variable. I tried unsuccessfully in the 2D/3D window (ALG mode):

 

a) entering the function UTPN(0,5,X). When I want to type ( ) (Left Shift -) it beeps and no way.

b) entering the function utpn(0,5,X). It accepts input and attempts graphing, but only the axes appear. When looking at TABLE, I see all Y1 being "Error".

c) entering the function by using CAT and choosing function UTPN in equation editor. It gives "... too few arguments."


How can I accomplish this?

 

Thanks for answers,

Franz

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Re: HP 50g - graph of library function

Thank you, it works just fine

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Teacher
Posts: 118
Member Since: ‎03-10-2013
Message 2 of 4 (523 Views)

Re: HP 50g - graph of library function

In my opinion it seems to be a bug in 50g rom

I got "bad argument type" (ROM 2.15) instead of yours too few arguments

When you get only coordinates instead of plot try to use zoom with zin or zout, maybe you'all see the plot if you are lucky :-)

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Grad Student
Posts: 257
Member Since: ‎02-04-2014
Message 3 of 4 (513 Views)

Re: HP 50g - graph of library function

UTPN is a command, not a function.  That means (among other things) that it cannot be used inside an algebraic expression.  You may, however, include UTPN in a user-defined function, such as this one:

 

<< -> X << 0 5 X UTPN >> >>

 Save that using any name you wish, e.g. Utpn, and then graph that new function, e.g. Utpn(X).

 

Let us know whether that works for you or not.

-Joe-
Teacher
Posts: 118
Member Since: ‎03-10-2013
Message 4 of 4 (499 Views)

Re: HP 50g - graph of library function

Thank you, it works just fine

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