Use a graphing device (or Newtons method or a rootfinder)
Chapter 11, Problem 11.7.20(choose chapter or problem)
Use a graphing device (or Newtons method or a rootfinder) to find the critical points of correct to three decimal places. Then classify the critical points and find the highest or lowest points on the graph.f x, y 5 10xy 4x 2 3y y 4 f x, y
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