Question

Square root function:
What is the range of the function \(f(x) = \sqrt{x} \)?
Is it \(R\) or \(R^{+}U 0 \)?
http://openstudy.com/users/foolaroundmath#/updates/5001afb8e4b0848ddd661fba
The source of the original doubt

Answer 1

The original question from where the doubt originated was to solve
\[\sqrt{8-2x} = x-4\] http://openstudy.com/users/foolaroundmath#/updates/5001afb8e4b0848ddd661fba
where there was a difference of opinion as to whether x = 2 is a solution or not