Maths - Interval Notation

Pearson Edexcel Mathematics 2022


Flashcards

Reading intervals from a number line

What is this in interval notation?

\[(a, b)\]

What is this in interval notation?

\[[a, b]\]

What is this in interval notation?

\[[a, b)\]

What is this in interval notation?

\[(a, b]\]

Converting intervals to inequalities

\[(a, b)\]

What is this as an inequality for $x$?

\[a < x < b\]
\[[a, b]\]

What is this as an inequality for $x$?

\[a \le x \le b\]
\[[a, b)\]

What is this as an inequality for $x$?

\[a \le x < b\]
\[(a, b]\]

What is this as an inequality for $x$?

\[a < x \le b\]

Bracket conventions

What type of brackets are used for a closed interval?

Square, $[]$

What type of brackets are used for an open interval?

Circular, $()$