"Find point C on the X-axis so that AC+BC is a minimum"
These are just thrown into an assignment on Reflections, and I for one don't get it.
We've got about 20 problems of them, so I can't really just try and hope it's right, either.
I'm not even sure what it's asking for... Am I supposed to find a new point that would create the shortest possible line segments if graphed, or what?
If it's something else, what formulae would I use?