I solved this and think the range is: y>=3.Did I solve correctly?

Ali Sao asked Dec 17, 2023

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Ali Sao asked Dec 17, 2023

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7 votes

Notice that

$\begin{gathered} x^2\ge0,x\in\Re \\ \Rightarrow x^2+3\ge3,x\in\Re \\ \Rightarrow f(x)\ge3,x\in\Re \end{gathered}$

Therefore, the range of the function is f(x)>=3, or [3,infinite)

Kief answered Dec 24, 2023

by Kief

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