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37 A figura mostra o gráfico <strong>da</strong> função f ( x ) = 1+x − 2x.ResoluçãoA Determine as soluções que não são números reais <strong>da</strong> equação f ( x ) = 0.B Resolva a inequação: f ( x ) ≥ 1.2A f ( x ) = ( x −1).(−2x− 2x−1)−1+i −1−i2x2 + 2x+ 1 = 0 → x ; x =2 2− 22B x ≤ ou 0 ≤ x ≤227
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