Question

Si (3x+1) ∈ [-5; 13[ ¿A qué intervalo pertenece x/2+1

Answer 1

Explicación paso a paso:

5<=3x+1<=13

4<=3x<=12

4/3<=x<=12/3

4/3<=x<=12/3

(4/3)/2<=x/2<=(12/3) /2

2/3<=x/2<=2

5/3<=x/2+1<=3

[5/3,3]