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Set Builder Notation Learning

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By Author: math qa22
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In set theory and its application to logic, computer science and mathematics, set-builder notation learning is a mathematical notation for relating a set by stating the property that its members must suit. Form of sets in this way is also known as set comprehension, set concept or as defining a Set's intention.

A set, casually, is a collection of things. The "things" in the set are known as the "elements", and are listed inside curly braces.

Explanation of set-builder notation learning:

The set {x: x 0} is read clearly, "the set of all x such that x is greater than 0." It is read aloud accurately the same way when the colon: is replace by the vertical line | as in {x | x 0}.

General Form: {formula for elements: restrictions} or

{Method for elements| restrictions}

{X: x ? 4} the set of all real numbers except 4

{X | x 6} the set of all real numbers less than 6

{X2 | x is a real number} the set of all real numbers greater than or equal to 0

{3n + 1: n is an integer} The set of all odd integers (e.g. ..., -5, -3,-1, 1, 3, 5...).

Symbol Explanation of set-builder ...
... notation learning:

The listing of an element can be done according to the rule, such as:

{x is a natural number, x 12}

When is to be technical, use full "set-builder notation learning", which is shown below;

{x | x ? N, x 12}

The line is defined as "the set of all x, such that x is the natural numbers and x is less than 12". The vertical line is typically defined as "such that", the vertical line come between the name of the variable and the rule that tells those elements actually are. This same set, hence the elements are less, we can give by a listing of the elements, like this:

{1, 2, 3, 4, 5, 6, 7, 8, 9.10, 11}

In set theory and its applications to logic, mathematics, and computer science, set-builder notation is a mathematical notation for describing a set by stating the properties that its members must satisfy.

A set is a well defined collection of objects.

We usually denote sets by capital letters of English alphabet like A, B, C, S, M, N etc. and the objects of the elements of the set by lower case letters like a, b, c, etc.

Example: The set of vowels in English alphabhet = { a, e, i, o, u}

Set of positive even numbers = { 2, 4, 6, 8, 10,... }

A set can be described in two ways:

Set builder notation or rule form
Roster form or Tabular form or Listing method

In this tutoring, let us learn set builder notation.

Tutoring on Representation Set Builder Notation:

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Set Builder notation:

In set builder notation, all the elements of a set possess a single common property which is not possessed by any element outside the set.

The simplest sort of set-builder notation is {x : P(x)},

where P is a predicate in one variable. This indicates the set of everything satisfying the predicate P, which is the set of every object x such that P(x) is true.

Consider.

the set A = { 4, 5, 6, 7 8, 9, 10}.

We could see that the elements are between 4 and 10.

Mathematically that could be represented as 4 `=` x `=` 10.

Let us denote this using set builder form.

A = { x: x is a natural number and 4 `=` x `=` 10}.

Instead of x, we could also use y, z, a, b, c...The elements of the set are denoted using the variables.

After that put a colon and write the characteristic property possessed by the elements within the { }.

We could read it as the set of all x such that x is a natural number that lies between 4 and 10.

The colon stands for "such that" and The braces { } stands for "set of all".

Tutoring on Example Problems on Set Builder Notation:

Represent the following sets in set builder notation:

Example 1:

(i) The set of all natural numbers less than 8.

(ii) The set of the numbers 2, 4, 6, … .

Solution:

(i) A natural number is less than 8 can be described by the statement:

x ? N, x 8.

Therefore, the set is {x | x ? N, x 8}.

(ii) A number x in the form of 2, 4, 6, … can be described by the statement:

x = 2n, n ? N.

Therefore, the set is {x | x = 2n, n ? N}.

Example 2:

Find the set of all even numbers less than 28, express this in set builder notation.

Solution:

The set of all even numbers less than 28.

The numbers are, x = {2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26}

{x | x is a even number, x 28}.

Example 3: { x : x is a letter of the word MATHEMATICS }

= { M, A, T, H, E, I, C, S}

Example 4: { x : x is an integer and x + 1 = 1}

= { 0 }

Example 5: { x : x is an integer and x2 - 9 = 0}

= { 3, -3 }

Example 6: {x : x is a real number and x 0}

which is the set of all positive real numbers;

Example 7: {k : for some natural number n, k = 2n}

which is the set of all even natural numbers;

Example8: {S: S is a set and S which does not belong to S)

which is the set of all sets that don't belong to themselves.


Learn more on about Solve each System of Equations and its Examples. Between, if you have problem on these topics Right Circular Cylinder, Please share your comments.

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