Power with a negative exponent

a^{-n}=\dfrac{1}{a^n}

Result unit: — (liczba)

What it describes

A power with a negative exponent is the reciprocal of the power with the positive exponent.

a

base (

a\neq 0

)

n

exponent

A negative exponent means the reciprocal — “move it to the denominator and change the sign of the exponent.”

Expressions with negative exponents, scientific notation.

Evaluate

2^{-3}

Substitution

\dfrac{1}{2^3}

Result

\dfrac{1}{8}=0.125

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