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MathNet 2018-part-05 — 181 problems (EN–VI) Question 153

Math Olympiad Vault · MathNet 2018-part-05 — 181 problems (EN–VI)

Question 153

The function $f(x)=\frac{x^{2}-2x+1}{x^{2}+1}$ is given.

a) Compute the zeros, the poles and the asymptote, and sketch the graph of the function $f$.

b) Compute the intersection points of the graph of $f$ with the line $y=2$.

c) Determine the range of the function $f$.