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unions

by Queen Mullen
(Pensacola, FL)











































can any one help me understand unions and how to solve them

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Oct 26, 2010
Union of Sets
by: Staff


The question:

by Queen Mullen
(Pensacola, FL)

Can any one help me understand unions and how to solve them?


The answer:

The UNION of two sets is a straightforward concept. The best advice I can give you is: Don’t make this an overly complicated idea in your own mind.

(Just keep in mind that there is a difference between the UNION of two sets, and the INTERSECTION of two sets. )

A UNION of sets simply means the two sets are joined. The new set (which is the result of the union of two sets) includes all the elements of the original two sets.

The element of a set can be a number (such as the set of real numbers), or something else (think of a set of dishes, a chess set, or a set of tennis, etc.).


As an example, consider two sets whose elements consist only of numbers.

In this example, Set 1 will consist of the group of numbers 1, 2, 3 ; and Set 2 will consist of the group of numbers 9, 10, 11.


Using standard notation:

Set 1 = {1, 2, 3}
Set 2 = {9, 10, 11}


The UNION of these two sets can be written:

Set 1 UNION Set 2


The mathematical symbol for the UNION of two sets is: U.


Set 1 U Set 2



The UNION of these two sets is shown below:


Set 1 U Set 2 = {1, 2, 3, 9, 10, 11}


You may also want to take a look at the explanation of the UNION of sets which can be found at:


http://www.solving-math-problems.com/math-symbols-set-union.html





Thanks for writing.


Staff
www.solving-math-problems.com



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