Author Topic: Cool/Useful CAS tricks? (Read 5294 times) Tweet Share

kenhung123 · « **on:** April 18, 2010, 11:36:50 pm »

Hey guys,

I guess we all do CAS now, but I am extremely useless with my calculator. All I know is how to use solve, expand, factorise etc.. Which is quite useless. Do you guys know any tricks and useful functions on the CAS?

kenhung123 · « **Reply #1 on:** April 19, 2010, 12:18:18 am »

ti 89

/0 · « **Reply #2 on:** April 19, 2010, 12:43:09 am »

There's a lot of tricks...
I can only remember a few at a time

$\leq$ : Green Diamond $\rightarrow$ 0
$\geq$ : Green Diamond $\rightarrow$ .
Greek letters: Green Diamond $\rightarrow$ ( $\rightarrow$ ALPHA $\rightarrow$ (one of the keys with letters on top)
Log: Green Diamond $\rightarrow$ 7
Factorial: Green Diamond $\rightarrow$ $\div$
Parameter: Green Diamond $\rightarrow$ STO $\blacktriangleright$ (useful for those darn trig equations when u need to let the parameter equal something)
Return to previous screen: 2ND $\rightarrow$ APPS
Shortcut to probability stuff: CATALOG $\rightarrow$ F3
Adding restrictions to equations: $\mbox{solve}(\sin(x) = \frac{1}{2},x)\ |-2\pi \leq x \leq 2\pi\ \mbox{and}\ 4\pi \leq x \leq \frac{5\pi}{2}$ , where 'and' is from CATALOG
Adding restrictions to graphs: $y1 = x^2\ |\ 0 \leq x \leq 2$
Approximate: $\mbox{nSolve}(...)$
Simultaneous equations: $\mbox{solve}(x+y = 1\mbox{ and } x-y = 1, \lbrace x,y\rbrace)$
Shorter way to type matrices: [1,2,3;2,3,4;3,4,5]
Factorise even if irrational or complex: $\mbox{factor}( ... \ , x)$

Functions: F4 $\rightarrow$ Define $\rightarrow$ $f(x) = x^2+ax$
You can do all kinds of crazy shit with functions, like

$f(x)$ STO $\blacktriangleright$ y1(x)

$\mbox{solve}(f(1)=2,a)$

$\int (f(x),x,3,4)$

$\mbox{solve}(d(f(x),x)=3|x=2,a)$

$\mbox{Define } g(x) = f(x)^2$

GerrySly · « **Reply #3 on:** April 19, 2010, 09:34:08 am »

Quote from: /0 on April 19, 2010, 12:43:09 am

$\leq$ : Green Diamond $\rightarrow$ 0
$\geq$ : Green Diamond $\rightarrow$ .

For those you can also do => and <= (can't remember which way the = and <> sign go, so just change them up if you get an error)

Gloamglozer · « **Reply #4 on:** April 19, 2010, 10:16:06 am »

Quote from: /0 on April 19, 2010, 12:43:09 am

There's a lot of tricks...
I can only remember a few at a time

$\leq$ : Green Diamond $\rightarrow$ 0
$\geq$ : Green Diamond $\rightarrow$ .
Greek letters: Green Diamond $\rightarrow$ ( $\rightarrow$ ALPHA $\rightarrow$ (one of the keys with letters on top)
Log: Green Diamond $\rightarrow$ 7
Factorial: Green Diamond $\rightarrow$ $\div$
Parameter: Green Diamond $\rightarrow$ STO $\blacktriangleright$ (useful for those darn trig equations when u need to let the parameter equal something)
Return to previous screen: 2ND $\rightarrow$ APPS
Shortcut to probability stuff: CATALOG $\rightarrow$ F3
Adding restrictions to equations: $\mbox{solve}(\sin(x) = \frac{1}{2})\ |-2\pi \leq x \leq 2\pi\ \mbox{and}\ 4\pi \leq x \leq \frac{5\pi}{2}$ , where 'and' is from CATALOG
Adding restrictions to graphs: $y1 = x^2\ |\ 0 \leq x \leq 2$
Approximate: $\mbox{nSolve}(...)$
Simultaneous equations: $\mbox{solve}(x+y = 1\mbox{ and } x-y = 1, \lbrace x,y\rbrace)$
Shorter way to type matrices: [1,2,3;2,3,4;3,4,5]
Factorise even if irrational or complex: $\mbox{factor}( ... \ , x)$

Functions: F4 $\rightarrow$ Define $\rightarrow$ $f(x) = x^2+ax$
You can do all kinds of crazy shit with functions, like

$f(x)$ STO $\blacktriangleright$ y1(x)

$\mbox{solve}(f(1)=2,a)$

$\int (f(x),x,3,4)$

$\mbox{solve}(d(f(x),x)=3|x=2,a)$

$\mbox{Define } g(x) = f(x)^2$

I think that's pretty much all you need to know. Also, you might also need to use Stats/List for some of the probability stuff. I think it's with conditional probability but I'm a bit rusty on probability.

AzureBlue · « **Reply #5 on:** April 19, 2010, 01:50:07 pm »

Any tricks for CASIO Classpad 330 - I am a disaster when it comes to tech-active.

But I can normally get a decent score ~95% by doing it without CAS.

GerrySly · « **Reply #6 on:** April 19, 2010, 02:02:27 pm »

Quote from: AzureBlue on April 19, 2010, 01:50:07 pm

Any tricks for CASIO Classpad 330 - I am a disaster when it comes to tech-free. But I can normally get a decent score ~95% by doing it without CAS.

Aren't they the same thing?

AzureBlue · « **Reply #7 on:** April 19, 2010, 02:26:41 pm »

woops tech active i mean. changed. :O

kenhung123 · « **Reply #8 on:** April 19, 2010, 04:34:11 pm »

Thanks /0 great compilation!

Richiie · « **Reply #9 on:** April 24, 2010, 11:19:28 pm »

TI N-Spire CAS seems to be working perfectly for me. Much more easier interface than casio classpad imo.

vea · « **Reply #10 on:** April 25, 2010, 11:51:01 am »

Quote from: Richiie on April 24, 2010, 11:19:28 pm

TI N-Spire CAS seems to be working perfectly for me. Much more easier interface than casio classpad imo.

My school uses the classpad 330 which I reckon is more user-friendly compared to the TI's. The touch screen feature also makes it funner to use

Greggler · « **Reply #11 on:** April 25, 2010, 12:44:37 pm »

classpad ftw

Search the forums now!

We have moved!

Author Topic: Cool/Useful CAS tricks? (Read 5294 times) Tweet Share

kenhung123

Cool/Useful CAS tricks?

kenhung123

Re: Cool/Useful CAS tricks?

/0

Re: Cool/Useful CAS tricks?

GerrySly

Re: Cool/Useful CAS tricks?

Gloamglozer

Re: Cool/Useful CAS tricks?

AzureBlue

Re: Cool/Useful CAS tricks?

GerrySly

Re: Cool/Useful CAS tricks?

AzureBlue

Re: Cool/Useful CAS tricks?

kenhung123

Re: Cool/Useful CAS tricks?

Richiie

Re: Cool/Useful CAS tricks?

vea

Re: Cool/Useful CAS tricks?

Greggler

Re: Cool/Useful CAS tricks?

Recent Posts

User:
Password: