Question

1.Determinati:
Faceti si axa,va rog!!

Answer 1

a)
-∞--------------  -2/3  --------------- 0 ---------1------  4/3 ------------- 2 -------------  ∞
(-∞,1)∩[-2/3,4/3]∩(0,2) = [-2/3,1)∩(0,2)=(0,1)

-∞ ------------- 1/2------1---------2---------3---------4---------5------------------------ ∞
((1,2)∪(2,4))∩(1/2,5)=(1,4)∩(1/2,5)=(1,4)

-∞--------  -5 ------  -5/2 ------  -1/2 ------3/4------------4/3-------------7-------------∞
(-5,3/4)∩[-1/2,4/3]∩[-5/2,3/4]∩(-1/2,7)=(-1/2,3/4)

-∞ -----  -11/3-----------  -√2--------0----------1-----------4/3----------√3---------------∞
(-∞,4/3)∩(-√2,√3]∩[0,∞)∩[-11/3,1]=[0,1]

nu stiu ce intelegi dar mai detaliat nu pot,
ultimele raspunsuri le-am pus direct ca ma plictisesc sa bat in keyboard
nu sunt sigur ca din graba s-a bagat vreo greseala