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rational exponents

An exponent containing a rational number. Examples: $x^{\frac{1}{n}} = \sqrt[n]{x}$ , ${(x^{n})}^{\frac{1}{n}} = \sqrt[n]{x^{n}} = | x |$ .

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$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$