text use definition of riemann integral to prove fxleftbeginarrayll 2
Question
\text { Use definition of Riemann integral to prove } f(x)=\left\{\begin{array}{ll}
2 & 0 \leq x<1 \\
3 & 1 \leq x \leq 2
\end{array} \text { is integrable on }[0,2]\right. \text {. }
