« previous next »
Pages: [1] 2 3   Go Down

Author Topic: x=5; x>4  (Read 11215 times)

0 Members and 1 Guest are viewing this topic.

Offline Munchor

  • LV13 Extreme Addict (Next: 9001)
  • *************
  • Posts: 6199
  • Rating: +295/-121
  • Code Recycler
    • View Profile
x=5; x>4
« on: November 09, 2010, 04:55:15 pm »
Hey there,

I'm doing Cartesian graphics at school and both my calcs (84 and NSpire) can't do the following:

x>4

x=3y

They can only do:

f1(x)=4
(which is the same than:)
y=4

y=7x^2

So, is there a way to change it or any other graphics program that can deal with x as an independent variable?
Logged

Offline Xeda112358

  • they/them
  • Moderator
  • LV12 Extreme Poster (Next: 5000)
  • ************
  • Posts: 4704
  • Rating: +719/-6
  • Calc-u-lator, do doo doo do do do.
    • View Profile
Re: x=5; x>4
« Reply #1 on: November 09, 2010, 04:58:11 pm »
If you can make Y in terms of X you should be fine. For the X>4, I don't know what to say. I don't own an Nspire; does it have a DrawInv equivalent?
Logged

Offline yunhua98

  • You won't this read sentence right.
  • LV11 Super Veteran (Next: 3000)
  • ***********
  • Posts: 2718
  • Rating: +214/-12
  • Go take a dive in the River Lethe.
    • View Profile
Re: x=5; x>4
« Reply #2 on: November 09, 2010, 04:58:59 pm »
if you install Inequalz, you should be able to activate x=, and as for x=3y, change that to y=x/3.  ;)
also, for x>4, you can move the cursor to the slanted line next to the "Y=" on the screen.  press that until you get "/" with the top part shaded, that is equivalent to ">"  press it until you get "/" with the bottom shaded, that is "<".
« Last Edit: November 09, 2010, 05:00:55 pm by yunhua98 »
Logged
+2/-0 karm for this message

Spoiler For =====My Projects=====:
Minor setback due to code messing up.  On hold for Contest.
<hr>
On hold for Contest.


Spoiler For ===Staff Memberships===:






Have you seen any good news-worthy programs/events?  If so, PM me with an article to be included in the next issue of CGPN!
The Game is only a demo, the code that allows one to win hasn't been done.
To paraphrase Oedipus, Hamlet, Lear, and all those guys, "I wish I had known this some time ago."
Signature Last Updated: 12/26/11
<hr>

Offline Munchor

  • LV13 Extreme Addict (Next: 9001)
  • *************
  • Posts: 6199
  • Rating: +295/-121
  • Code Recycler
    • View Profile
Re: x=5; x>4
« Reply #3 on: November 09, 2010, 05:04:17 pm »
Quote from: yunhua98 on November 09, 2010, 04:58:59 pm
if you install Inequalz, you should be able to activate x=, and as for x=3y, change that to y=x/3.  ;)
also, for x>4, you can move the cursor to the slanted line next to the "Y=" on the screen.  press that until you get "/" with the top part shaded, that is equivalent to ">"  press it until you get "/" with the bottom shaded, that is "<".

Okay...

Can I rate that post up?

I WILL do so, thanks much Inequal installed, very good working, perfect!
Logged

Offline AngelFish

  • Is this my custom title?
  • Administrator
  • LV12 Extreme Poster (Next: 5000)
  • ************
  • Posts: 3242
  • Rating: +270/-27
  • I'm a Fishbot
    • View Profile
Re: x=5; x>4
« Reply #4 on: November 09, 2010, 05:54:16 pm »
Quote from: Xeda112358 on November 09, 2010, 04:58:11 pm
If you can make Y in terms of X you should be fine. For the X>4, I don't know what to say. I don't own an Nspire; does it have a DrawInv equivalent?

Yep. The DrawInv command is included with the 84+ series.
Logged
∂²Ψ    -(2m(V(x)-E)Ψ
---  = -------------
∂x²        ℏ²Ψ

Offline MRide

  • LV8 Addict (Next: 1000)
  • ********
  • Posts: 711
  • Rating: +14/-0
  • You can't see this.
    • View Profile
Re: x=5; x>4
« Reply #5 on: November 09, 2010, 06:18:23 pm »
Also, you can acheive the same thing with parametric equations.  Put T in for Y=, and your equation in for X=.
If I am mistaken, please let me know. :)
Logged

Offline FinaleTI

  • Believe in the pony that believes in you!
  • CoT Emeritus
  • LV10 31337 u53r (Next: 2000)
  • *
  • Posts: 1830
  • Rating: +121/-2
  • Believe in the pony that believes in you!
    • View Profile
    • dmuckerman.tumblr.com
Re: x=5; x>4
« Reply #6 on: November 09, 2010, 06:39:46 pm »
While we're giving graphing tips, if you want to graph a piece-wise function, enclose the parameters in curly braces, and then the equation in curly braces.
Example:
Y={X>2 and X<7}{X2}

This will graph X2 from 3 to 6. I found this helpful earlier this year in Pre-Calc.
Logged


Spoiler For Projects:

My projects haven't been worked on in a while, so they're all on hiatus for the time being. I do hope to eventually return to them in some form or another...

Spoiler For Pokemon TI:
Axe port of Pokemon Red/Blue to the 83+/84+ family. On hold.

Spoiler For Nostalgia:
My big personal project, an original RPG about dimensional travel and a few heroes tasked with saving the world.
Coding-wise, on hold, but I am re-working the story.

Spoiler For Finale's Super Insane Tunnel Pack of Doom:
I will be combining Blur and Collision Course into a single gamepack. On hold.

Spoiler For Nostalgia Origins: Sky's Story:
Prequel to Nostalgia. On hold, especially while the story is re-worked.

Offline MRide

  • LV8 Addict (Next: 1000)
  • ********
  • Posts: 711
  • Rating: +14/-0
  • You can't see this.
    • View Profile
Re: x=5; x>4
« Reply #7 on: November 09, 2010, 06:42:19 pm »
Shouldn't that just be parentheses?
Logged

Offline AngelFish

  • Is this my custom title?
  • Administrator
  • LV12 Extreme Poster (Next: 5000)
  • ************
  • Posts: 3242
  • Rating: +270/-27
  • I'm a Fishbot
    • View Profile
Re: x=5; x>4
« Reply #8 on: November 09, 2010, 06:44:15 pm »
I've been wondering how to do piecewise functions for a long time. Thanks.

EDIT: Mride, nope. Parentheses designate an expression. Curly brackets designate something else.
« Last Edit: November 09, 2010, 06:45:02 pm by Qwerty.55 »
Logged
∂²Ψ    -(2m(V(x)-E)Ψ
---  = -------------
∂x²        ℏ²Ψ

Offline Deep Toaster

  • So much to do, so much time, so little motivation
  • Administrator
  • LV13 Extreme Addict (Next: 9001)
  • *************
  • Posts: 8217
  • Rating: +758/-15
    • View Profile
    • ClrHome
Re: x=5; x>4
« Reply #9 on: November 09, 2010, 06:45:31 pm »
They should be parentheses. Braces are for families of functions.

EDIT: Ninja'd by

Quote from: Qwerty.55 on November 09, 2010, 06:44:15 pm
I've been wondering how to do piecewise functions for a long time. Thanks.

EDIT: Mride, nope. Parentheses designate an expression. Curly brackets designate something else.

What calc is this for?
« Last Edit: November 09, 2010, 06:46:13 pm by Deep Thought »
Logged



Offline FinaleTI

  • Believe in the pony that believes in you!
  • CoT Emeritus
  • LV10 31337 u53r (Next: 2000)
  • *
  • Posts: 1830
  • Rating: +121/-2
  • Believe in the pony that believes in you!
    • View Profile
    • dmuckerman.tumblr.com
Re: x=5; x>4
« Reply #10 on: November 09, 2010, 06:47:36 pm »
Nope, curly braces.
Screenie:

Edit: This is for the 83+/84+ calcs.
« Last Edit: November 09, 2010, 06:48:03 pm by FinaleTI »
Logged


Spoiler For Projects:

My projects haven't been worked on in a while, so they're all on hiatus for the time being. I do hope to eventually return to them in some form or another...

Spoiler For Pokemon TI:
Axe port of Pokemon Red/Blue to the 83+/84+ family. On hold.

Spoiler For Nostalgia:
My big personal project, an original RPG about dimensional travel and a few heroes tasked with saving the world.
Coding-wise, on hold, but I am re-working the story.

Spoiler For Finale's Super Insane Tunnel Pack of Doom:
I will be combining Blur and Collision Course into a single gamepack. On hold.

Spoiler For Nostalgia Origins: Sky's Story:
Prequel to Nostalgia. On hold, especially while the story is re-worked.

Offline Munchor

  • LV13 Extreme Addict (Next: 9001)
  • *************
  • Posts: 6199
  • Rating: +295/-121
  • Code Recycler
    • View Profile
Re: x=5; x>4
« Reply #11 on: November 09, 2010, 06:49:48 pm »
Quote from: FinaleTI on November 09, 2010, 06:47:36 pm
Nope, curly braces.
Screenie:

Edit: This is for the 83+/84+ calcs.

Works too, great!
Logged

Offline Deep Toaster

  • So much to do, so much time, so little motivation
  • Administrator
  • LV13 Extreme Addict (Next: 9001)
  • *************
  • Posts: 8217
  • Rating: +758/-15
    • View Profile
    • ClrHome
Re: x=5; x>4
« Reply #12 on: November 09, 2010, 06:51:07 pm »
I think they're just multiplying the families together. It also works with parentheses or even multiplication (so Y1=(X<2 and X>7)(X2) would also work). Braces are used to graph a family of functions, like Y1=X^{1,2,3,4,5}.
« Last Edit: November 09, 2010, 06:52:37 pm by Deep Thought »
Logged



Offline meishe91

  • Super Ninja
  • LV11 Super Veteran (Next: 3000)
  • ***********
  • Posts: 2946
  • Rating: +115/-11
    • View Profile
    • DeviantArt
Re: x=5; x>4
« Reply #13 on: November 09, 2010, 06:56:58 pm »
Well I don't know about the curly bracket thing really but it does work with regular parentheses the same way, I mean all it's doing is making everything equal zero unless it's within those bounds, which both accomplish.
Logged
Spoiler For Spoiler:



For the 51st time, that is not my card! (Magic Joke)

Offline Deep Toaster

  • So much to do, so much time, so little motivation
  • Administrator
  • LV13 Extreme Addict (Next: 9001)
  • *************
  • Posts: 8217
  • Rating: +758/-15
    • View Profile
    • ClrHome
Re: x=5; x>4
« Reply #14 on: November 09, 2010, 06:57:47 pm »
I'm pretty sure it's even slower with braces, since it has to convert them into lists before graphing them as families of functions.
Logged



Pages: [1] 2 3   Go Up
« previous next »