( Can a Mod move this to the correct board? -- I threw it in here by accident since it sounded about right )

Hiya,

I'm in a classroom full where everyone uses Ti calculators and no one can help me with my casio, one of the equations that everyone has is:

y4 = sqrt( (xt1(x) - xt2(x))^2 + (yt1(x)-yt2(x))^2 )

where y4 is in y= and the x1t xt2 yt1 yt2 are in parametric.

I'm getting a syntax error and I'm pretty sure that's because i'm trying to use parametric variables in a y= function, HOWEVER THAT'S EXACTLY WHAT EVERYONE ELSE IS DOING.

So please, help me out, I don't know what else to do. I haven't found any good parametric tutorials on casio and I don't know how to use that equation to find the distances between the 2 parametric equations.

**Edited by Sumaxi, 13 April 2015 - 11:23 AM.**