Equine Kingdom: My
daughter Sally's horse riding website

Rules of Exponents

These rules for exponents
give some insight into why
logarithms are useful for performing multiplication, division, and
exponent operations.

The exponent is usually shown as a superscript to the right of the base. The
exponentiation a^{n} can be read as: a raised to the n-th power, a raised to the power [of] n or possibly
a raised to the exponent [of] n, or more briefly: a to the n-th power or a to the power [of] n, or even more
briefly: a to the n. Some exponents have their own pronunciation: for example, a^{2} is usually read as a
squared and a^{3} as a cubed.

The power an can be defined also when n is a negative integer, at
least for nonzero a. No natural extension to all real a and n exists, but when the base a is a positive real
number, an can be defined for all real and even complex exponents n via the exponential function e^{z}.
Trigonometric functions can be expressed in terms of complex exponentiation.
- Wikipedia