Request for The Golden Ratio.
08-06-2015, 11:42 PM
Post: #1
 douganc Junior Member Posts: 34 Joined: Sep 2014
Request for The Golden Ratio.
Hp Prime Software Team.

1: Please add the Golden Ratio (1.618 ect.) to the Maths Constants Menu on the Hp Prime soft keys.

2: Also please add a photo of a Renaissance Painting that demonstrates the early use of geometric perspective to the built in photo library.

This would be very useful for Artistic Students who are studying Perspective and Geometry.
To get them interested in Maths Class.

Please store the ratio to fifty decimal places.

Thank You
Colm
08-07-2015, 01:07 AM
Post: #2
 ArielPalazzesi Member Posts: 90 Joined: Dec 2013
RE: Request for The Golden Ratio.
Hello!

For 1), try

(1 + sqrt(5)) / 2
08-07-2015, 10:02 PM
Post: #3
 retoa Member Posts: 168 Joined: Jan 2015
RE: Request for The Golden Ratio.
Or

(sqrt(5) - 1) / 2

if you need 1/phi

No need for a specific constant if you know what the Golden Ratio is. It's not like pi, e or some physical constants you have to know because there is no easy way to calculate them.

Reto
08-07-2015, 11:45 PM
Post: #4
 douganc Junior Member Posts: 34 Joined: Sep 2014
RE: Request for The Golden Ratio.
Thank You for Help.

Still it would nice to have Phi on soft menu, to quickly call it.
and in Catalog also.

We can Dream as Artists Do .......

Colm
08-08-2015, 06:49 AM
Post: #5
 salvomic Senior Member Posts: 1,379 Joined: Jan 2015
RE: Request for The Golden Ratio.
(08-07-2015 11:45 PM)douganc Wrote:  Thank You for Help.

Still it would nice to have Phi on soft menu, to quickly call it.
and in Catalog also.

We can Dream as Artists Do .......

Colm

you could define a function.
Use Define (shift D):
name -> phi_golden (phi is Euler function, already "occupied", see here)
function: (1+√5)/2

Then you find it in Toolbar -> User -> User functions

Try it

Salvo

∫aL√0mic (IT9CLU) :: HP Prime 50g 41CX 71b 42s 39s 35s 12C 15C - DM42, DM41X - WP34s Prime Soft. Lib
08-08-2015, 08:11 AM
Post: #6
 douganc Junior Member Posts: 34 Joined: Sep 2014
RE: Request for The Golden Ratio.
Thank You ???
08-08-2015, 08:13 AM
Post: #7
 douganc Junior Member Posts: 34 Joined: Sep 2014
RE: Request for The Golden Ratio.
Ignore the question marks, don't know where they came from.

Colm
08-08-2015, 09:13 AM
Post: #8
 salvomic Senior Member Posts: 1,379 Joined: Jan 2015
RE: Request for The Golden Ratio.
(08-08-2015 08:13 AM)douganc Wrote:  Ignore the question marks, don't know where they came from.

Colm

ok Colm :-)