# Thread: parameterization of a paraboloid.

1. ## parameterization of a paraboloid.

Hi all,

Could somebody please help me parameterize a paraboloid in cylindrical coordinates.

Question is as follows:

A paraboloid has height 2 and max radius 2.

Based on cylindrical coordinates, enter the parameterization ,
such that and gives the paraboloid surface above.

How do i do this?

Any help greatly appreciated thanks.

2. ## Re: parameterization of a paraboloid.

Hey mcleja.

The first thing you should do is write down the equations to take you Euclidean to Cylindrical. From there you can then express things in terms of r and t (in cylindrical) and the cylindrical co-ordinates will be a function of r and t.

If you are confused with the r's and t's, just drop them and replace x(r,t) with x, y(t,r) with y and z(r,t) with z and after you converted to the co-ordinate system add the r and t back in.

3. ## Re: parameterization of a paraboloid.

Hi chiro,

I tried the question again, and i was able to get the right answer.

Thanks.

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