Expression 2: negative pi minus "x" left brace, negative pi less than "x" less than negative StartFraction, 2 pi Over 3 , EndFraction , right brace Has graph. To audio trace, press ALT+T.−π−x−π<x<−2π3
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Expression 3: pi minus "x" left brace, StartFraction, 2 pi Over 3 , EndFraction less than "x" less than or equal to pi , right brace Has graph. To audio trace, press ALT+T.π−x2π3<x≤π