Hi I an studying for the midterm and I would like to know if I got these questions correct.
$\left\lfloor 1.9 \right\rfloor$ - I said that it was an onto function.
2.Find the value of $\left\lceil -1.9 \right\rceil$. In general, is this operation (ceiling) bijective?
$\left\lceil -1.9 \right\rceil$ - I said this one was also an onto function.