1. Wykonaj działania
a) ½( ⅖+⁴/₇) - ⅕
b) (⁵/₆+1,5) : (⁵/₇-1⅔)
2. Dane są zbiory : A = { -2, -1, 0, 2, 4, 5, 6 }
B = [ 1, 3, 4, 5 }
Wyznacz A ∨ B , A ∧ B , A / B
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a)=1/2(14/35+20/35)-1/5=1/2 *34/35-1/5=17/35-1/5=17/35-1/5=17/35-7/35=10/35
b)=(50/60+90/60)/(15/21-35/21)=140/60/(-20/21)=147/60=49/20
2.AvB =-2,-1,,2,4,5,6,1,3
B) =4,5
A/B -2,-1,0,2,6