describing of one object
The Description Form, Roster Form, and The Set-Builder Notation Form.
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There are two ways of describing, or specifying the members of, a set. One way is by intensional definition, using a rule or semantic description. See this example: A is the set whose members are the first four positive integers. B is the set of colors of the French flag. The second way is by extension, that is, listing each member of the set. An extensional definition is notated by enclosing the list of members in braces: C = {4, 2, 1, 3} D = {blue, white, red}
You can list all the elements of the set. Or, another way is to use set-builder notation. For example {x | x < 5} means the set of all real numbers less than 5. You could not list all of these since there are an infinite number. If you have {x |3 x < 5, x is a natural number } the set of all natural numbers less than 5 and greater than 3, so it is two. You could write this set as {2} or in words say the set that contains the number 2.
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describing of one object
The Description Form, Roster Form, and The Set-Builder Notation Form.
The set of all x which are answers to a particular problem. The set of all ordered pairs, (x,y), which are solutions to an equation of 2 variables.
A joint set is a dumb thing in the dumber thing mathematics
=See the section in this article about that topic. http://en.wikipedia.org/wiki/Set_(mathematics)
a.Roster Method:By listing ex:A={1,3,5,7} b.Rule Method:By describing/defining ex:A={the first odd numbers}
Null set
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No, weight and displacement is not a set of vectors. A vector in the area of mathematics is defined as a direction as well as a magnitude of a specific item. Vectors can be labeled in a variety of ways.
There are two ways of describing, or specifying the members of, a set. One way is by intensional definition, using a rule or semantic description. See this example: A is the set whose members are the first four positive integers. B is the set of colors of the French flag. The second way is by extension, that is, listing each member of the set. An extensional definition is notated by enclosing the list of members in braces: C = {4, 2, 1, 3} D = {blue, white, red}
There are two ways of describing, or specifying the members of, a set. One way is by intensional definition, using a rule or semantic description. See this example: A is the set whose members are the first four positive integers. B is the set of colors of the French flag. The second way is by extension, that is, listing each member of the set. An extensional definition is notated by enclosing the list of members in braces: C = {4, 2, 1, 3} D = {blue, white, red}