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Help with Programming a HP 33S



#2

I have a HP 33s and I'm taking the PE exam in April.

I wanted to program the calculator to do some quick interpolations. I haven't programmed a HP 32SII or HP 33S so I'm unsure how to do this.

Interpolation should be a simple program and would help with steam tables. In addition, it would save me time on the test.

Can anybody help or point me in the right direction or get me started?

Thanks,
Eric


#3

Hi, Eric;

if you want linear interpolation, you could use the statistical resources. You could enter the coordinates of the two points and use linear estimation to computer either Y or X value of the intermediate point. Unfortunately, the HP33S standard statistic functions do not handle logaritmic, exponential and power curves.

If this is what you need and you still need further advice, let us know.

Cheers.

Luiz (Brazil)

Edited: 31 Mar 2006, 12:34 a.m.

#4

Like Luiz said, but I can add that the non-linear interpolations are available, too. Ever since the 11-c (and before) there have been routines for them--and the 11-c version will work fine (with minor syntax changes) as will the 32sii version.

It is a relatively trivial program. Certainly making your own linear interp is trivial--I've done it ad hoc many times.

The museum has a cd/dvd available that has the 11c and the 15c manuals on it...

Let us know the outcome.


#5

Thanks! I guess I'll have to look up this functionality in my manual.

This could save me alot of time on the test.

Thanks to both of you for responding... The HP 33S isn't as bad as everybody says- I use a 32SII at work for daily tasks and my GX is a bit overkill and would make me look nerdy. :)

Eric


#6

Yo! Hey! Nerd is cool! If I had a GX (I have the G and G+), I'd worry more about breaking it! I truly wish those 48s were rubber encased or something.

#7

Eric,

I have a very simple program if you're just trying to do a linear inperpolation with known points. Me personally, I like the easier functions you can use to program in the HP 33s. I hope this is what you're looking for.

Type in these keys --->
[green] PRGM
[green] LBL X
[green] INPUT A
[green] INPUT B
[green] INPUT C
[green] INPUT D
[green] INPUT F
[purple] EQN
(B-A)*(F-D)/(C-A)+D
ENTER
[purple] RTN
(Press C to exit)

Program Displays --->
PRGRM TOP
X0001 LBL X (Note: You can choose letter)
X0002 INPUT A
X0003 INPUT B
X0004 INPUT C
X0005 INPUT D
X0006 INPUT F
X0007 (B-A)*(F-D)/(C-A)+D
X0008 ENTER
X0009 RTN

Press EQN X, Then it'll ask you to input A,B,C,D,F. Press the "R/S" button after input each variable and not the "ENTER" button. The answer should be shown after you input the "F" value.

Sincerely,

Vense Phonesouphan
Curtainwall Application/Design, BSCE
vense_phone@yahoo.com


Edited: 17 Apr 2006, 9:08 a.m.


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