draw parabola

Write a Matlab m-file to input three points (x1,y1), (x2,y2) and (x3,y3) in the x-y plane, and to draw the function and output the equation of a parabola passing through these points.

haw can draw?

Answer 1

[Sean de Wolski]

doc linspace 
doc plot
doc ezplot %If you have the symbolic math toolbox

A few pointers.

[Sean de Wolski]

Okay, I'll give you a bigger hint:

doc polyfit %and friends

[Jan]

I prefer the "doc polyfit" hint. +1

Answer 2

[emrah kara]

we will take the three points from the keyboard then we will draw a parabola which intercepts these points so we need a method to solve this problem.

[John D'Errico]

So? This is not the we do your homework site. Sean has already given you some hints to get started. Why not make a stab at it? If you have a problem with something, THEN ask a question.

Answer 3

[Jose Jeremias Caballero]

Hello, you improve your question.
 Your question would be:

   1). Write a program in Matlab, to find the equation of the parabola with focal axis parallel to the X axis passing through the points (x1, y1), (x2, y2) and (x3, y3).

   2). Write a program in Matlab, to find the equation of the parabola with focal axis parallel to the Y axis, passing through the points (x1, y1), (x2, y2) and (x3, y3).

   3). Write a program in Matlab, to find the equation of the parabola passing through the points (x1, y1), (x2, y2) (x3, y3), (x4, y4) and (x5, y5).

[Jan]

This does not answer the OP's question.