INTERVALE

Scrieţi mulţimea corespunzătoare 

A={x  $\in$  R, -2 $\le$  x < 7} 

• [-2, 7]

• [-2,7)

• (-2, 7)

• {-2,7}

Aflaţi mulţimea
F = {x  $\in$  R, x  $\le$  - 6 }

• ( - 6, + $\infty$  )

• ( -  $\infty$  , -6]

• ( - 6, 0)

A (adevărat) sau F (fals) ?  $-\frac{4}{3}$    $\in$   ( -  $\infty$  , -1 ) 

Efectuaţi ( - 4, 3]  $\cap$  Z

• ( - 4, 3]

• ( - 4, 3)

• { - 3, - 2, - 1, 0, 1, 2, 3]

• { - 4, - 3, - 2, - 1, 0, 1, 2, 3]

Aflaţi mulţimea A = { 1 <  $\frac{3x\ +\ 8}{2}$ }

• x  $\in$  [ - 2, + $\infty$  )

• x  $\in$  [ + 6, + $\infty$  )

• x  $\in$  [ - 1, + $\infty$  )

• x  $\in$  ( - 2, + $\infty$  )