Display the interval notation for
x<1orx>=3
Interval Notation Definition:
An interval is a set of numbers.
Numbers = endpoints of the interval.
Simplify x<1
Simplify x>=3
Revised interval notation
Therefore, x<1 or x>=3
Display the interval notation for:
x<1orx≥3
Interval Notation Definition:
An interval as a set of numbers.
Numbers = endpoints.
Account for or
Since we have an or statement
We break this up into two pieces
Piece 1 → x<1
Piece 2 → x≥3
Evaluate Piece 1
Inequality Sign Evaluation
You entered the < sign
Build the interval notation for x:
Because you entered an equal sign
Translate to ) since we include the number 1
Based on the < you entered,
the left side of the interval notation will extend to negative infinity,
which is denoted as -∞
Final Answer
Set Builder Notation for x:
{ x | x<1 } where | denotes such that
Evaluate Piece 2
Inequality Sign Evaluation
You entered the < sign
Build the interval notation for x:
Because you entered an equal sign
Translate to [ since we include the number 3
Based on the < you entered,
the right side of the interval notation will extend to positive infinity,
which is denoted as +∞
Final Answer
Set Builder Notation for x:
{ x | x<1 } where | denotes such that
Form our interval notation for x:
(-∞,1) U [3,+∞)
Display the literal notation for x
3,4,5,6,7,8,9,10,11,12,13,...,∞
Common Core State Standards In This Lesson
What is the Answer?
How does the Interval Notation and Set Builder Notation Calculator work?
* x < 5
* y <= 5
* z > 5
* a >= 5
* b < 5 or b > 20
* Compound Inequality such as 0 <= c < 4
* |x|<3
* Reverse Interval Notation to Inequality Statement such as (-7,5]
* {x|x<1}
* Word representations of interval notations such as 2 is less than or equal to x is less than or equal to 8
This calculator has 2 inputs.
What 2 formulas are used for the Interval Notation and Set Builder Notation Calculator?
No equal sign means you use a parentheses
What 10 concepts are covered in the Interval Notation and Set Builder Notation Calculator?
- domain
- Set of all possible input values which makes the output value of a function valid
- equal
- being the same in quantity, size, degree, or value
= - greater than
- Shows an inequality of one value being more than another
> - inequality
- a relation which makes a non-equal comparison between two numbers or other mathematical expressions.
>, <, ≤, ≥ - interval
- a set of real numbers that contains all real numbers lying between any two numbers of the set
- interval notation
- a method to represent an interval on a number line using subsets of the real numbers
- interval notation and set builder notation
- less than
- Shows an inequality of one value being less than another
< - notation
- An expression made up of symbols for representing operations, unspecified numbers, relations and any other mathematical objects
- range
- Difference between the largest and smallest values in a number set
