# Math Help - Riemann integrable

1. ## Riemann integrable

if f: [1,2] $\rightarrow$ R and f(x) = x, is it Riemann intregrable?

can someone explain it to me... hopefully in a way I understand... hehe

2. yes, since continuous functions over compact sets are.

3. do you know how to find the upper and lower sums? in this case, I guess they would just equal each other....