Practice those optimization skills!

Problem

Given space, f, left parenthesis, x, right parenthesis, equals, 2, square root of, 9, minus, x, end square root, space, what is the space, x-coordinate of the point on the curve that is closest to the origin?
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0, point, 75
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
Get 3 answers correct in a row