Question

qual o conjunto Solução de

Answer 1

Oie, Td Bom?!

$- 4(2x - 1) \: . \: ( \frac{x}{3} - 1) > 0 \\ - 4(2x - 1) \: . \: ( \frac{x}{3} ) \div ( - 4) < 0 \div ( - 4) \\ (2x - 1) \: . \: ( \frac{x}{3} - 1) < 0$

$\left\{\begin{matrix}</p><p> 2x - 1 < 0& \\ </p><p> \frac{x}{3} - 1 > 0 & </p><p>\end{matrix}\right. \\ \left\{\begin{matrix}</p><p> 2x - > 0& \\ </p><p> \frac{x}{3} - 1 < 0 & </p><p>\end{matrix}\right.$

$\left\{\begin{matrix}</p><p> x < \frac{1}{2} & \\ </p><p> x > 3& </p><p>\end{matrix}\right. \\ \left\{\begin{matrix}</p><p> x > \frac{1}{2} & \\ </p><p> x < 3& </p><p>\end{matrix}\right.$

$x∈\varnothing \\ x∈\left \langle \frac{1}{2} \: , \: 3 \right \rangle$

S = $\left \{ x ∈\left \langle \frac{1}{3} \:,\: 3 \right \rangle\right \}$

Att. Makaveli1996