# Need Help for use the ClassPad with mathematical f

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### #1 Electric

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Posted 04 February 2004 - 09:59 AM

Hello,

for my examination in electrical engineering, I have to save 150 mathematical formual in my Class Pad.
Im not sure of the right way to put in the formula.
Programm
or
eActivity
or
and so on

Lg= L1 + L2 + L3 + L4

Pzu1*(Lg-L1) + Pzu2*(Lg-L1-L2) + Pzu3*(Lg-L1-L2-L3)
Pa= -------------------------------------------------------
Lg
Input: L1 ....L4 (L x)

Input: Pzu1...Pzu3 (Pzu x)

Output: Pa

Are any able to help my, please send me operating intructions to put in that following formula example.
I hope to hear soon, and thanks for you help.

With kind regards from Germany

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### #2 Andy.Davies

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Posted 04 February 2004 - 11:02 AM

im kinda the electronic engineering guy, but i dont have a classpad .....yet <_< so i cant help you? do you own any other calcs? if you had a CXF or an AFX, i couold help you with those...

### #3 Overlord

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Posted 04 February 2004 - 02:55 PM

i would write them in differents eactivities regarding the concerned chapter, and at the top of each page add a elink to "main" mode : you can see all formulas and you can calculate easily.

### #4 Daruosh

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Posted 04 February 2004 - 03:03 PM

I think you have to write some simple functions in Library folder.
Use the Program Application.
For example you want to store :
V = RI

Folow these instructions:
1: Tap on the Program Application in Main Menu
2: Tap on the New Icon in toolbar and choose Function from top scroll bar.
3: Select Library folder form folder scroll bar then tap on OK.
4: In editor box enter a name for your formula (such as Voltage)
5: In front of functuon name enter parameters (I, R)
6: In main edit box type your formula (V*I)
7: Store your function and then you can use it in main application.

If you have some problems, you can refer to your classpad guid.

Good lock.
Daruosh

### #5 mkanter

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Posted 05 February 2004 - 11:08 AM

some of the guysatmy university (and me too) needed some of these formulas too, we've done the way Overlord discribed.

Write an eActivity with a main thing in it. (you can input the formula once and then copy it in the main thing)

An warning: Don't use r1, r2, ... in your formulas (we got errors) - use s1, s2, ... or something like this instead.

### #6 betoe

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Posted 05 February 2004 - 09:15 PM

I like electronics too, i made 2 programs for the classpad about electronics. Also i hope i will start programing my classpad again the next vacations (i will finish my studies then i will not have nothing to do in the nights), hope i will have a nice project to do.

i would write them in differents eactivities regarding the concerned chapter, and at the top of each page add a elink to "main" mode : you can see all formulas and you can calculate easily.

@Overlord: Nice i would like to watch that. Also i can add some formulas, but right now i have some lack of time. If i can download your programs/e-activities please tell me the URL i'm interested on it.

### #7 Overlord

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Posted 06 February 2004 - 05:50 PM

hum i must have used a incorrect tense/word (argh grammar grammar grammar )

if i need that, i do that
but for the moment i don't need that so i haven't the eact

### #8 mkanter

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Posted 09 February 2004 - 01:55 PM

He has sent me an email with this problem and it's better the write an program in this case.
My eActs has been deleted while i was playing with my classpad (learning the hard way)

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