Question: (a) The curve y = 1/(1 + x2) is called a witch of Maria Agnesi. Find an equation of the tangent line to this curve

(a) The curve y = 1/(1 + x2) is called a witch of Maria Agnesi. Find an equation of the tangent line to this curve at the point (- 1, 1/2).
(b) Illustrate part (a) by graphing the curve and the tangent line on the same screen.

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