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Need help installing apps on the 50g
04-04-2014, 06:07 PM (This post was last modified: 04-04-2014 06:08 PM by Thomas Klemm.)
Post: #15
RE: Need help installing apps on the 50g
(04-04-2014 04:59 AM)Fanboy Wrote:  As I said, all I'm looking for is something which can graph 3d parametrics of the form: f(t) = <x(t),y(t),z(t)>. Is that even possible on the 50g?

Maybe not exactly what you wanted because I'm using the HP-48G but it might lead you into the right direction.
I created a function \(F(t):\mathbb{R}\rightarrow\mathbb{C}\):
Code:
\<< \-> t
  \<< P
    'x(t)' EVAL
    'y(t)' EVAL
    'z(t)' EVAL
    \->V3 *
    V\-> R\->C
  \>>
\>>
Save this as F.

These are the 3 functions for a helix as an example:
Code:
\<< \-> t 'COS(t)' \>>
Save this as x.

Code:
\<< \-> t 'SIN(t)' \>>
Save this as y.

Code:
\<< \-> t 'h*t' \>>
Save this as z. You can save 0.1 in h or change that later.

For the projection P I used:
Code:
[[  1 1 1  ]
 [ -1 1 1  ]]
But you might want to use two vectors that are orthonormal instead.

Now in the PLOT menu set:
TYPE: Parametric
EQ: 'F(X)'
INDEP: X

You may choose other values for LO and HI in the OPTS sub-menu.

With this I got the following picture:
[Image: attachment.php?aid=437]

Cheers
Thomas


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RE: Need help installing apps on the 50g - Thomas Klemm - 04-04-2014 06:07 PM



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