Main content

## The imaginary unit i

# Intro to the imaginary numbers

CCSS.Math:

Learn about the imaginary unit i, about the imaginary numbers, and about square roots of negative numbers.

Sort by:

If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains ***.kastatic.org** and ***.kasandbox.org** are unblocked.

Main content

CCSS.Math:

Learn about the imaginary unit i, about the imaginary numbers, and about square roots of negative numbers.

Sort by: