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intersections parametric and cartesian equations
11-02-2009, 06:56 AM
Post: #1
intersections parametric and cartesian equations
Ive been reading through the guides and watching the tutorial videos however i have yet been unable to find a way of finding the intersection between a cartesian and a parametric equation. When you have two cartesian it is simple you right click with both selectected and click solve f(x)=g(x). With a parametric equation this option does not exist.

I have the following equations

cartesian y=(8/3)x-(23/6)
parametric x=4cos(2t),y=3sint

How would i find the intersections of these equations. Thanks.
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16-02-2009, 05:56 PM
Post: #2
Re: intersections parametric and cartesian equatio
Hi Trevor,

Unfortunately intersections between parametric and cartesian equation are not supported at this time.  

The best you can do for the time-being is to use the powerful zoom tools to get very close to the intersection and then read off the coordinates.

Rearranging the parametric in the form of a quadratic x = a(y - b)^2 + c will make it easier to find the intersections analytically.

Simon
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