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MathNet 2019-part-06 — 184 problems (EN–VI) Question 140

Math Olympiad Vault · MathNet 2019-part-06 — 184 problems (EN–VI)

Question 140

Which interval is the range of the function $f(x)=\cos x+1-\pi$?

(A) $[-1+\pi, 2]$
(B) $[0, \pi+2]$
(C) $[-\pi, 2-\pi]$
(D) $[-\pi, 1+\pi]$
(E) $[1-\pi, 2-\pi]$