# Curve through more than 3 points

Majid Alawi shared this question 2 years ago

Can somebody help me with finding a general way of creating or seeing a formula for a curve through more than 3 point? Parametric as wel as polar and general. No mather what?

like: y=x^2

x=y^2

conic sections

etc!

Thanks for any reaction!

2

spline?

2
1

Is it possible to see an example? Is it polar as wel as parametric?

2

Maybe you can post some examples of what you want exactly

1

Of course! Thanks for your time!

In geogebra (see picture) it is possible to see the equation of a circle through 3 points.

The same circle has a polar equation and a parametric one.

My question is wheather it is possible for any other function or curve.

So: (0,0) (1,1) (4,2) makes a circle (which we know) and also x=y^2 and maybe other curves through the same points.

Or for example (1,1) (2,2) (3,1) (3,2) (2,0) gives this equation: X^2+Y^2-XY-3X=-2 which is a Hyperbola.

x=y^2 will not be given (I do not know why?) but I want also the parametric equation of any kind of curve through these (right now 3 or 5 and maybe later 4 or more) points.

Maybe it is not possible at all! But you do not know!

I just wanna know! Curiosity!