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Negative exponent

A negative exponent describes a fraction

 

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Example 0

In school you learned

You must know then already that 2⁰ = 1 and 2¹ = 2.

 

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Example 1

A negative exponent may be a rational number

 

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Example 2

A division by zero is not defined, so

0^–1 = ?

 

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Example 3

You can calculate the reciprocal of the imaginary unit as

because the imaginary unit has no real value.

 

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