Find a point on the graph of that is closest to the origin.
We want to minimize the distance CB as C moves along the curve.
The function to minimize is the distance function for segment CB.
Use the AM-GM inequality to determine the length and the value of x for which the minimum occurs.
Make a graph showing the distance function being minimized, the minimum, and the value of x at which the minimum occurs.
Set up of the AM-GM Analysis. Open only after you have constructed your own.