Graphics Newbie Question

[jparker]

I am trying to understand the Math of a Camera in Computer Graphics.
Here is the question
If i have a camera a point a, How do I compute the view matrix so the camera looks at point b?

[JVene]

Let's first see if I understand the question.

You have a camera over which you have motion control?

There's some API that let's you move the camera?

You have an image in view (obviously where the camera is currently aimed).

You want to compute a motion command so that the center of the camera is moved over a point in that view that's not currently at the center?

[jparker]

Yeah that is basically it but I have to show the math for it, so that is what I need to see or at less the process by which to do it.