Famous Curves In Exercises 69—-72, find an equation of the tangent line to the graph at the given point. (The graphs in Exercises 69 and 70 are called Witches of Agnesi. The graphs in Exercises 71 and 72 are called serpentines.)
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Famous Curves In Exercises 39-42, find the slope of the tangent line to the graph at the given point.
Witch of Agnesi;
Finding an Equation of a Tangent Plane
In Exercises 69–72, find an equation of the tangent plane to the surface at the given point.
