Intersection of polar curves?

[Katie]

Is it possible to determine the intersection point between polar curves?  We've tried all possible processes to find the intersection between two curves with two rose curves graphed in a polar system.  Is there something we're missing, or is this not possible? 

 

thanks for any help,

Katie

[Jim Fullerenex]

Seems that it is not possible. But you can still locate a point manually on the intersection place (though not that precise, of course) and read its coordinates.

Best Wishes,

Jim Fullerenex

2011/7/14 Katie <Kathleen_...@mcpsmd.org>

Is it possible to determine the intersection point between polar curves?  We've tried all possible processes to find the intersection between two curves with two rose curves graphed in a polar system.  Is there something we're missing, or is this not possible? 

 

thanks for any help,

Katie

--
To post to this group, send email to tins...@googlegroups.com
To unsubscribe send email to tinspire+u...@googlegroups.com
For more options, visit this group at
http://groups.google.com.au/group/tinspire?hl=en-GB?hl=en-GB
The tns documents shared by group members are archived at
http://lafacroft.com/archive/nspire.php

[Lana Golembeski]

I have found the only way to do that is to do it manually...keep zooming in. Wish there was another way but I have not found it.

Lana

--
Lana Golembeski

AP Calculus Teacher

College Board Consultant

Minnetonka High School

Minnetonka, Mn

[Jim Fullerenex]

A better "approximation" way: use "point on" instead of just "point" the hh will assure you that the point is at least precisely on one graph.

But if you are doing so merely to get the coordinate value, why not trying out by solve() on the calculator page?

Best Wishes,

Jim Fullerenex

2011/7/14 Lana Golembeski <gole...@gmail.com>

[Sean Bird]

Try Trace.
Get close to where you think the intersection is and then up-arrow. Keep pressing the up arrow until it gives the same r-value for both. If you press enter you will drop a point - the x & y point.