Pre-Calculus

Vocab review for final exam

Principal root

The positive square root of a number

Integer

A whole number that can be positive, negative, or zero. It does not have any fractional or decimal parts. Examples include -3, 0, 7.

Rational Numbers

Numbers that can be expressed as a fraction of two integers, where the denominator is not zero.

Irrational Numbers

Real numbers that cannot be expressed as a fraction of two integers and have non-repeating, non-terminating decimal expansions.

Real numbers

All rational and irrational numbers on the number line, such as integers, fractions, decimals, and square roots.

Imaginary Numbers

Numbers that can be written as a real number multiplied by the imaginary unit "i," where i is the square root of -1.