Hello,
I know parabola coordinate and that is z=X^2+Y^2 and I can use polar coordinate too.
Now I want to shift my Parabola PI/4 like what you see in picture please help me to find formula.
You don't have your axes labeled but that looks like a rotation of radians about the y-axis. Such a rotation can be done by multiplying by the matrix
And, of course, the reverse is just rotating through the negative angle so is multiplying by
That is
So becomes
How can I change write this one?
Thanks helpful.
I try to draw it with MATLAB!
new x,y,z is
http://www.mathhelpforum.com/math-he...a4d53c7c6e.png ??