SOLUTION: The sets D and E are defined as: D= {y|y < 2} and E= {y|y ≥ 7}
How would I write this using interval notation?
D ∩ E = ?
D ∪ E = ?
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-> SOLUTION: The sets D and E are defined as: D= {y|y < 2} and E= {y|y ≥ 7}
How would I write this using interval notation?
D ∩ E = ?
D ∪ E = ?
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Question 993270: The sets D and E are defined as: D= {y|y < 2} and E= {y|y ≥ 7}
How would I write this using interval notation?
D ∩ E = ?
D ∪ E = ? Answer by Edwin McCravy(20056) (Show Source):
Draw D and E on number lines
D:
<===============○------------------------------
-3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12
E:
-------------------------------●==============>
-3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12
D ∩ E = ?
That asks for the set of numbers which the two graphs
have in common. They have NO elements in common, so
the interval notation is () or the empty set ⌀.
D ∪ E = ?
That asks for the set of numbers which are part of
either or both sets. So we put the two graphs together
on the same number line and get
<===============○--------------●==============>
-3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12
The interval notation is
Edwin
