Question
Describe in words the region of $ \mathbb{R}^3 $ represented by the equation(s) or inequality.$ x^2 + y^2 + z^2 \le 4 $
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Describe in words the region of $ \mathbb{R}^3 $ represented by the equation(s) or inequality. $ x^2 + y^2 + z^2 = 4 $
Describe in words the region of $\mathbb{R}^{3}$ represented by the equation(s) or inequalities. $x^{2}+y^{2}+z^{2}=4$
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