Explicație pas cu pas:
E(x)=| x²+2,| - |x²| + |x-6| + 6x - 2
0<x<6 deci x-6<0 adica E(x)=x²+2-x²-x+6+6x-2 deci E(x)=5x+6 €(6,36)
E(x) = |x+4| + |x-2|
-4<x<2 adica 0<x+4 si x-2<0 deci E(x)= x+4-x+2=6
E(x) = |x+3| + |x-1| - 2|x-2|
-3<x<1 deci x+3>0, x-1<0 si x-2<0 atunci E(x)=x+3-x+1+2x-4=2x €(-6,2)
