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What’s the answer to this radical function

What’s the answer to this radical function-example-1
User GoGreen
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Explanation:

We have,


f(x) = - 2 \sqrt[3]{x + 7}

Taking limit,


\lim _(x \rarr \infty ) f(x) \\ = \lim _(x \rarr \infty ) - 2 \sqrt[3]{x + 7}

If x approaches to positive infinity,

this implies f(x) approaches to negative infinity

User Wingblade
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