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A Non-Reintersecting Tangent (Posted on 2016-02-24) Difficulty: 3 of 5
Most tangent lines to the curve y=1/(x^2+1) reintersect the curve at another point. Three of these tangent lines do not. One of them is the trivial line y=1. Find the other two.

  Submitted by Brian Smith    
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Solution: (Hide)
The tangents are the two lines tangent at the curve's two inflection points. Charlie derives them here.

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  Subject Author Date
SolutionsolutionCharlie2016-02-24 15:09:22
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