Guide to Using the Ti-nspire for METHODS - The simple and the overcomplicated

[Lasercookie]

This is random, but the fastest way to fill in a 4x4 matrix on the NSpire is to go anti-clockwise, starting from the default place

Wow, that actually is a lot faster.

[Greatness]

Can you graph vertical lines? Like x=1?

[b^3]

Can you graph vertical lines? Like x=1?

I've been trying to work this out for years (it would help with further).
Just found two ways of kinda doing it.
First one I don't like, it's drawing it on so it isn't really giving the proper equation - > http://groups.google.com/group/tinspire/browse_thread/thread/742dac98ac35f5e6
The second one kind works. You have to set the graph bar to parametric mode. Then in x(t)= enter whatever x is. i.e. for x=2, x(t)=2.
For y(t) enter t so that y(t)=t
The line won't fill the screen so you have to change the domain in the bottom left hand corner to something bigger like say -10 to 10, I tried -infinty to infity but it didn't work.

[nacho]

Can you graph vertical lines? Like x=1?

I've been trying to work this out for years (it would help with further).
Just found two ways of kinda doing it.
First one I don't like, it's drawing it on so it isn't really giving the proper equation - > http://groups.google.com/group/tinspire/browse_thread/thread/742dac98ac35f5e6
The second one kind works. You have to set the graph bar to parametric mode. Then in x(t)= enter whatever x is. i.e. for x=2, x(t)=2.
For y(t) enter t so that y(t)=t
The line won't fill the screen so you have to change the domain in the bottom left hand corner to something bigger like say -10 to 10, I tried -infinty to infity but it didn't work.

uhh
i just tried doing this and my calculator shit itself and everything got resetted??!?

[b^3]

Can you graph vertical lines? Like x=1?

I've been trying to work this out for years (it would help with further).
Just found two ways of kinda doing it.
First one I don't like, it's drawing it on so it isn't really giving the proper equation - > http://groups.google.com/group/tinspire/browse_thread/thread/742dac98ac35f5e6
The second one kind works. You have to set the graph bar to parametric mode. Then in x(t)= enter whatever x is. i.e. for x=2, x(t)=2.
For y(t) enter t so that y(t)=t
The line won't fill the screen so you have to change the domain in the bottom left hand corner to something bigger like say -10 to 10, I tried -infinty to infity but it didn't work.

uhh
i just tried doing this and my calculator shit itself and everything got resetted??!?

Wait what happened?
And which method did you use?

[Cappuccinos]

Can you graph vertical lines? Like x=1?

This is kinda dodgy method but just make the gradient like 1000000000000 (Depending on the window settings, if the lines still not straight, add more 0s!)

E.g. So If I wanted to draw x=1  I typed in f(x)= 1000000000000(x-1) 
x=2, f(x)= 1000000000000000(x-2) 
x=-2, f(x)=1000000000000000(x+2)

Yeah really dodgy, but it sort of works if you just want to see what x=2 looks like hahah.

EDIT: You don't have to waste time typing a trillion zeros! Thanks to laseredd for discovering a quicker method

This is probably the best method I've seen lol.

Though, I would use:

Just a tad bit easier

edit: if you add in more 9's, it replaces it with infinity and doesn't draw the line.

[nacho]

method two,
and after the reset i tried it again, but no lines are appearing?

[b^3]

Method 2 is the one that should work. When I say change it to parametric I mean only the grph bar, using [menu] [2] [2]. Then you should get the x1(t)= and x2(t)= with a domain and tstep size yeh?

And make sure you put in t instead of x.

Try it again and tell me the results.

[Lasercookie]

Can you graph vertical lines? Like x=1?

This is kinda dodgy method but just make the gradient like 1000000000000 (Depending on the window settings, if the lines still not straight, add more 0s!)

E.g. So If I wanted to draw x=1  I typed in f(x)= 1000000000000(x-1) 
x=2, f(x)= 1000000000000000(x-2) 
x=-2, f(x)=1000000000000000(x+2)

Yeah really dodgy, but it sort of works if you just want to see what x=2 looks like hahah.

This is probably the best method I've seen lol.

Though, I would use:

Just a tad bit easier

edit: if you add in more 9's, it replaces it with infinity and doesn't draw the line.

[nacho]

Method 2 is the one that should work. When I say change it to parametric I mean only the grph bar, using [menu] [2] [2]. Then you should get the x1(t)= and x2(t)= with a domain and tstep size yeh?

And make sure you put in t instead of x.

Try it again and tell me the results.

yep that is what i tried
u mean menu, 3, 2, correct?

i put this:
{x1(t): 1
{y1(t): 0 (tried like 100 numbers including 1, 2, -1, x..., whats it supposed to be?
{0<t<6.28     tstep = 0.13 (tried changing domain to [-10, 10] still no luck)

oh wait i got it, i was putting x in y1(t) instead of t.
btw what is the y1 for ? do we only just put t there? or anything we like?

[b^3]

Method 2 is the one that should work. When I say change it to parametric I mean only the grph bar, using [menu] [2] [2]. Then you should get the x1(t)= and x2(t)= with a domain and tstep size yeh?

And make sure you put in t instead of x.

Try it again and tell me the results.

yep that is what i tried
u mean menu, 3, 2, correct?

i put this:
{x1(t): 1
{y1(t): 0 (tried like 100 numbers including 1, 2, -1, x..., whats it supposed to be?
{0<t<6.28     tstep = 0.13 (tried changing domain to [-10, 10] still no luck)

oh wait i got it, i was putting x in y1(t) instead of t.
btw what is the y1 for ? do we only just put t there? or anything we like?

I meant ctrl in front of the [menu], it does the same thing anyway.
should be:
{x1(t): 1
{y1(t): t
{-10<t<10 and whatever size step.

Have you got the lastest OS?

[jinny1]

moved

[duquesne9995]

 

Can you graph vertical lines? Like x=1?

depends what you need the line for
one way i know is sketch y=2 then put a point on the graph e.g. (2,2)
this can be done by going to menu 7 2
then go to menu A 1 and make a perpendicular line, click the first point on the point that you just made and then click on the x-axis around (0,2) and it will make the line
but it's not very long and I don't know how to make it look longer

[b^3]

Can you graph vertical lines? Like x=1?

depends what you need the line for
one way i know is sketch y=2 then put a point on the graph e.g. (2,2)
this can be done by going to menu 7 2
then go to menu A 1 and make a perpendicular line, click the first point on the point that you just made and then click on the x-axis around (0,2) and it will make the line
but it's not very long and I don't know how to make it look longer

That is the first method I linked to above. To make it longer you dot an endpoint and enter in the value (or something like that).

[Greatness]

Ergh.... so lame as if they wouldnt have this feature available..... Not like you need it often but it would be helpful.

Thanks for the suggestions!