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VLD [36.1K]
3 years ago
8

Several intervals can be combined into one region using the "set union" operation, ∪∪, which is represented as "u" in webwork. f

or example, [-2,0] u (8,inf) represents the points from −2−2 to 00 together with everything bigger than 8.
Mathematics
1 answer:
alekssr [168]3 years ago
7 0

Write the set of points from  -6 to 0 but excluding  -4  and 0 as a union of intervals

First we take  the interval  -6 to 0. In that -4  and 0 are excluded.

So we split the interval -6 to 0.

Start with -6 and go up to -4. -4 is excluded so we break at -4. Also we use parenthesis for -4.

Interval becomes [-6,-4) . It says -6 included but -4 excluded.

Next interval starts at -4 and ends at 0. -4 and 0 are excluded so we use parenthesis not square brackets

(-4,0)

Now we take union of both intervals

[-6,-4) U (-4,0)  --- Interval from  -6 to 0 but excluding  -4  and 0



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