Trigonometric regressions on hp 48?

04112017, 03:20 AM
Post: #1




Trigonometric regressions on hp 48?
Hi,
Is there a program or any way to do since cosine and tangent regressions on the HP 48? 

04112017, 04:20 AM
Post: #2




RE: Trigonometric regressions on hp 48?
Trigonometric regressions will have to be programmed on the HP 48, as they are not default regressions offered through the Stat menu.


04142017, 06:07 AM
Post: #3




RE: Trigonometric regressions on hp 48?
Do you know of any programs for the HP 48 to do this?


04142017, 08:06 PM
Post: #4




RE: Trigonometric regressions on hp 48?
(04142017 06:07 AM)thomasross Wrote: Do you know of any programs for the HP 48 to do this? You can use SOLVESYS to do a regression using ANY formula (including trig formulas). The documentation for SOLVESYS even includes an example of how to do a regression. Graph 3D  QPI  SolveSys 

04152017, 04:09 AM
(This post was last modified: 04152017 04:12 AM by thomasross.)
Post: #5




RE: Trigonometric regressions on hp 48?
(04142017 08:06 PM)Han Wrote:(04142017 06:07 AM)thomasross Wrote: Do you know of any programs for the HP 48 to do this? Thanks! Do you just need to enter how many data entries you have as the third parameter? Is there any way to do it automatically? 

04152017, 09:58 AM
Post: #6




RE: Trigonometric regressions on hp 48?  
04152017, 11:08 AM
(This post was last modified: 04152017 11:09 AM by Han.)
Post: #7




RE: Trigonometric regressions on hp 48?
(04152017 09:58 AM)Csaba Tizedes Wrote:(04112017 03:20 AM)thomasross Wrote: Hi, Here's the documentation online: http://isa.umh.es/calc/ss49docs/solve49.htm Scroll down to "Example 3: Nonlinear leastsquares" to see an example. In your case, you would simply need to change the data; you will also need to change the formula to something like: 'Y=A*COS(B*T ADD C) ADD D' Graph 3D  QPI  SolveSys 

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