(B.)递减. (C.)不连续. (D.)连续.

【例2】设$g(x)=\int_{0}^{x}f(u)du$，其中$f(x)=\begin{cases}\frac{1}{2}(x^{2}+1),0\leqslant x<1,\\ \frac{1}{3}(x-1),1\leqslant x\leqslant 2,\end{cases}$则g(x)在区间(0,2)内 (
A.)无界. (
B.)递减. (
C.)不连续. (
D.)连续.

参考答案与解析：

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