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Each End of a String Is Tacked to the Point (4,0)(4,0)

Question 69

Short Answer

Each end of a string is tacked to the point (4,0)(4,0) and (−4,0)(-4,0) on inch graph paper. The string is 12 inches long. A pencil pulls the string taut and rotates to sweep out an ellipse. What are the focal points of the ellipse?

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