Answer:
[-2,6] - {3} - {6} = [-2,3) ∪ (3,6)
Step-by-step explanation:
Union Of Intervals
Let us assume two interval A = (a,b) and C = (c,d).
Their union is written as : A ∪ C = (a,b) ∪ (c,d)
Now, if interval is written in form [a,b] ⇒ a and b are INCLUDED in interval
Also, if interval is written in form (a,b) ⇒ a and b are NOT INCLUDED in interval
Here, the given interval is [-2,6]
excluding 3 and 6 from this will give:
[-2,3) ∪ (3,6)
The first set is [-2.3) where -2 is INCLUDED but 3 is NOT INCLUDED.
The second set is (3,6) where 3 and 6 both are NOT INCLUDED.
Hence, [-2,6] - {3} - {6} = [-2,3) ∪ (3,6)
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