Question

This is the picture of the paragraph of information. I will send the question next.

Answer 1

6) Note that since in this case, the x-axis is the surface of the water. Then contrarily, to the algebraic Domain that is defined for the Real set:

`\begin{gathered} \left(-\infty,\infty\right) \\ \end{gathered}`

We cannot include negative values for the area of that river, therefore the Domain could be