Multiplicative inverse

Multiplicative inverse of a number \(a\), is a number which when multiplied by \(a\) gives\(1\).

Multiplicative inverse of a number \(a\) is denoted by \(\frac{1}{a}\) or \(a^{-1}\).

Multiplicative inverse of a number \(a\) is also called: reciprocal of a number \(a\).

The multiplicative inverse of \(2\) is \(\frac{1}{2}\), because: \[2\cdot \frac{1}{2}=1\]

The multiplicative inverse of \(-5\) is \(-\frac{1}{5}\), because: \[-5\cdot \left(-\frac{1}{5}\right)=1\]

The multiplicative inverse of \(\sqrt{2}\) is \(\frac{1}{\sqrt{2}}\), because: \[\sqrt{2}\cdot \frac{1}{\sqrt{2}}=1\]

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