Question

scrieti sub forma de intervale multimile​

Answer 1

Răspuns:A = (-1,1)

B = [-7,7]

C = -2 < x-3 < 2 => -5 < x < -1 => (-5,-1)

D = -5 $\leq$ $\frac{x-1}{4}$ $\leq$ 5 => amplificam cu 4 => -20 [tex]\leq \\ [/tex] x-1 [tex]\leq \\ \\ \\ \\ \\ [/tex]20 => -21$\leq$x$\leq$19 => [-21,19]

E = -11< $\frac{2x-4}{3}$<11 => amplificam cu 3 => -33<2x-4<33 => -37<2x<29 => -74<x<58 => (-74,58)