Try another version of these questions Box 1: Enter your answer using interval notation. Example: [2.1,5.6172) Box 1: Enter your answer using interval notation. Example: [2.1,5.6172)
For intervals of values, enter your answer using interval notation. Here are some examples of how interval notation relates to inequalities:
Inequality Interval Notation `3 lt x lt 5` (3,5) `3 lt x le 5` (3,5] `x gt 3` `(3,oo)` `3 lt x lt 5 \ "or" \ 7 lt x lt 9` `(3,5)uu(7,9)`
With inequalities, we use "less than": < or "greater than": > to exclude the endpoint of the interval. With interval notation, we use use round parentheses, ( or ).
With inequalities, we use "less than or equal to": ≤ or "greater than or equal to": ≥ to include the endpoint of the interval. With interval notation, we use use square brackets, [ or ].
To combine two intervals, use U (an uppercase letter u) for union: `uu`
Use oo (two lowercase letter o's) for infinity: `oo`
For example, to enter `(-oo,-2]uu(3,6]`, you would type: (-oo,-2]U(3,6]
Try it now. Enter the interval equivalent to `2 lt x le 5 \ "or" \ x gt 7`
Use U for union to combine intervals. Example: (-oo,2] U [4,oo)
Enter DNE for an empty set. Use oo to enter Infinity.
all real numbers that are less than or equal to -22.
Use U for union to combine intervals. Example: (-oo,2] U [4,oo)
Enter DNE for an empty set. Use oo to enter Infinity.