Ti-nspire graphing quesion

• Feb 24th 2010, 05:22 AM
toprun91
Ti-nspire graphing quesion
Does anyone know how to graph a x= function on the Ti-nspire CAS calculator. An example would be x=5. I cant seem to figure it out. Also i dont want to rearrange the equation or anything like that. Also Does anyone know if the Ti-nspire or Casio classpad can find integrals along the y-axis in graph mode.
Thx
• Feb 24th 2010, 10:22 AM
earboth
Quote:

Originally Posted by toprun91
Does anyone know how to graph a x= function on the Ti-nspire CAS calculator. An example would be x=5. I cant seem to figure it out. Also i dont want to rearrange the equation or anything like that. Also Does anyone know if the Ti-nspire or Casio classpad can find integrals along the y-axis in graph mode.
Thx

Change into parametric mode. Then

xt1=5
yt1=t

But unfortunately you can't use parametric mode and function mode simultaneously.
• Feb 24th 2010, 04:14 PM
toprun91
Quote:

Originally Posted by earboth
Change into parametric mode. Then

xt1=5
yt1=t

But unfortunately you can't use parametric mode and function mode simultaneously.

Is there any other way. What if i want to do $\displaystyle x=y^2$. I know you can rearrange it to $\displaystyle y=\sqrt{x}$ but it only covers y>0 and i dont want to do that every time
• Jun 30th 2010, 09:35 PM
earboth
Quote:

Originally Posted by toprun91
Is there any other way. What if i want to do $\displaystyle x=y^2$. I know you can rearrange it to $\displaystyle y=\sqrt{x}$ but it only covers y>0 and i dont want to do that every time

To draw the graph of $\displaystyle x=y^2$ stay in parametric mode. Use:

x = t^2
y = t

Then you'll get both "branches" of the parabola.
• Jun 30th 2010, 11:13 PM
p0oint
You can plot $\displaystyle x=y^2$ by plotting the functions $\displaystyle y=\sqrt{x}$ and $\displaystyle y=-\sqrt{x}$ on same graph.

If you want to draw x=5, the best thing is to draw parametric equation.

Regards.
• Jul 9th 2010, 04:29 PM
sleigh
Quote:

Originally Posted by earboth
But unfortunately you can't use parametric mode and function mode simultaneously.

On the TI-Nspire/CAS, you can use both modes at the same time. Screenshot below: