If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)

Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

Parametric equation

Iwasfrozen · 2009-05-14 12:54:31

What procedure should be followed when trying to find the parametric equation of a curve when only given two points ?

14-05-2009 12:54pm

#1

Iwasfrozen

Registered Users, Registered Users 2 Posts: 16,250 ✭✭✭✭

Join Date: June 2008

Posts: 16112

What procedure should be followed when trying to find the parametric equation of a curve when only given two points ?

0

Comments

#2 14-05-2009 12:57pm

waraf

Closed Accounts Posts: 1,326 ✭✭✭

Join Date: January 2009

Posts: 1254

Dunno if this is any help to you....

http://ltcconline.net/greenl/courses/107/PolarParam/parameq.htm

0
#3 14-05-2009 3:29pm

LeixlipRed

Closed Accounts Posts: 6,081 ✭✭✭

Join Date: July 2007

Posts: 5982

Well it depends on what type of curve it is. Is it a straight line? A parabola, etc,?

0
#4 14-05-2009 4:28pm

Iwasfrozen

Registered Users, Registered Users 2 Posts: 16,250 ✭✭✭✭

Join Date: June 2008

Posts: 16112

I'm not exactly sure but I assume parabola.
Heres the exact question.
The Parametric Eqautions of a curve are :
X=In(1+t^2) and Y=In2t Where tER, t>0
Find the Value of dy over dx when t=(5)^1over2

0
#5 14-05-2009 4:35pm

LeixlipRed

Closed Accounts Posts: 6,081 ✭✭✭

Join Date: July 2007

Posts: 5982

It's not a parabola. In fact, you don't need to parameterise anything there as it's already done for you. To calculate dy/dx you neet to calculate dx/dt and dy/dt and then dy/dx = (dy/dt)(dt/dx).

0
#6 14-05-2009 5:01pm

Iwasfrozen

Registered Users, Registered Users 2 Posts: 16,250 ✭✭✭✭

Join Date: June 2008

Posts: 16112

Thats it ?
Wow thats easy. It's just the Termonology that had thrown me off.

0
Advertisement