Question: The curve y = 1/(1 + x 2 ) is called a witch of Maria Agnesi. Find y' and the x-coordinate of the point where

The curve

y= 1/(1 +x²)

is called awitch of Maria Agnesi. Find y' and the x-coordinate of the point where y' is zero. Find y" and the x-coordinates of the point where y" is zero. Find the equation of the tangent line to this curve at the point

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