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Determining the Domain of the Radical Function g(x)=5x43g(x) = \sqrt[3]{5x - 4}

To determine the domain of the radical function g(x)=5x43g(x) = \sqrt[3]{5x - 4}, first identify the index of the radical. The index is 33, which is an odd number. Since a radical with an odd index imposes no restrictions and can take any real number as its radicand to produce a real result, the expression 5x45x - 4 can be any real number. Therefore, the domain of the function is all real numbers, represented in interval notation as (,)(-\infty, \infty).

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Updated 2026-05-25

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