8 replies to this topic

[ripcurl]

Hi all,

New member here......

i recently bought a casio fx-9860g calculator mostly to do cross products..........

its an awesome piece of work except...........

i dont know how to do cross products can any one help me???????

[ripcurl]

also is it possible to download CAS for fx-9860????

[neilhack]

Hi,
I have written a prog which will do this for you
I will post it when I get home (at uni now)

Enter two vectors and prog returns:
Dot product, cross product
Magnitude of both vectors, magnitude of cross product
and angle between both vectors in radians and degrees....

[neilhack]

Hi
Here is code:
Not sure what the fonts are doing??
I've just cut and pasted straight out of FA-124....

If you give me your email addr. I'll send you the .g1m file...
Or if some one can tell how/where to upload file O'll do that too....

[codebox]Filename:DOTCROSS

ClrGraph?

AxesOff?

ClrText?

Sci 4?

EngOn?

Rad?

?

'Goto 1?

3->Dim List 1?

"First vector: A"?

"x#E5D1+y#E5D1+z#E5D1"?

"x#E5D1"?->X?

"y#E5D1"?->Y?

"z#E5CE"?->Z?

ClrText?

"Second vector: B"?

"x#E5D2+y#E5D2+z#E5D2"?

"x#E5D2"?->P?

"y#E5D2"?->Q?

"z#E5D2"?->R?

Lbl 1?

ClrText?

?(X'+Y'+Z')->A?

?(P'+Q'+R')->B?

Text 1,73," _"?

Text 7,75,"@7CA@7C"?

Text 7,90,A?

?

Text 14,73," _"?

Text 20,75,"@7CB@7C"?

Text 20,90,B?

?

Text 1,1,"_ _"?

Text 7,1,"A.B"?

XP+YQ+ZR->D?

Text 7,20,D?

?

cos? (D?(AB))->O?

Text 43,1,"Angle AB"?

Text 50,1,"Rads:?

Text 50,25,O?

Text 57,1,"Degs:"?

Text 57,25,O?180???

?

?

Text 14,1,"_ _"?

Text 20,1,"A?B"?

?

{YR-QZ,-(XR-PZ),XQ-PY}->List 1?

?(List 11'+List 12'+List 13')->C?

Text 28,69,"_ _"?

Text 34,67,"@7CA?B@7C"?

Text 34,90,C?

?

Text 20,20,"x"?

Text 20,30,List 11?

Text 27,20,"y"?

Text 27,30,List 12?

Text 34,20,"z"?

Text 34,30,List 13?

[/codebox]

[neilhack]

Hi again

Think i've managed to upload it to:

http://www.planet-ca...php?showid=1002

Let me know what you think....


Cheers Neil..

[neilhack]

Hi Rip,
You don't need to know anything about C/C++
You need to learn to drive the fa-124 program that came with calc
you can then download my program from:
http://www.planet-ca...php?showid=1002
and send it to your calc via USB cable..
Apparently you need to install fa-124 BEFORE you plug in USB cable or u can have problems....

Or you can work out crosss product by hand:

If vector A=x+y+z
and Vector B=p+q+r

then the cross product:

AxB = (y*r-q*z)+(p*z-x*r)+(x*q-p*y)

Hope this helps

Neil...

[ripcurl]

Hi Rip,
You don't need to know anything about C/C++
You need to learn to drive the fa-124 program that came with calc
you can then download my program from:
http://www.planet-ca...php?showid=1002
and send it to your calc via USB cable..
Apparently you need to install fa-124 BEFORE you plug in USB cable or u can have problems....

Or you can work out crosss product by hand:

If vector A=x+y+z
and Vector B=p+q+r

then the cross product:

AxB = (y*r-q*z)+(p*z-x*r)+(x*q-p*y)

Hope this helps

Neil...

ummmm

dont wanna sound like a total dumbass but whats fa-124?

[neilhack]

Basically it's the software you put on your PC to load programs
onto your calculator via a USB cable.

It should be on the CD that came with your calculator
there is a slightly later version here:
https://edu.casio.co...nload/class.php
Under "
fx-9860G series
PC Software

Fa-124 Manual here:
http://ftp.casio.co....en/FA-124_E.pdf
Works with windows Vista too, apparently..

Hope this helps
Neil