To solve this problem, we let be the coordinates of the point . Then we need to minimize the following function of and : After we eliminate from the above, we reduce to minimizing the following function of alone: To find the minimum value of we need to check the value at the following three points (in increasing order). (You will need to use a numerical method, like Newton-Raphson to find one of these points.) We conclude that the minimum value of occurs at Thus a solution to our original question is
Hint:
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