Division of functions with a radical in the denominator and domain

The video tutorial covers dividing functions, specifically focusing on the division of G(x) = 3 and F(x) = 2√x. It explains the concept of rationalizing the denominator, though it is not required for the current class. The main focus is on understanding the domain of the function, emphasizing that the domain is from zero to infinity, excluding zero, due to division constraints.

What does the teacher mean by 'all positive numbers' in relation to the square root function?

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Why is zero not included in the domain of the function?

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