Find the range of f(x)=⌊x⌋f(x) = \lfloor \sqrt{x} \rfloorf(x)=⌊x⌋ for x∈[0,4]x \in [0, 4]x∈[0,4].
{0,1,2}\{0, 1, 2\}{0,1,2}
[0,2][0, 2][0,2]
{0,1,2,3}\{0, 1, 2, 3\}{0,1,2,3}
[0,4][0, 4][0,4]