“微信扫一扫”进入题库练习及模拟考试
下列求导过程正确的是( )
A.\(\left ( {{x}^{2}+{2}^{x}} \right )^{'}=2x+{2}^{x}\ln {2}\)
B.\(\left ( {{x}^{2}{e}^{x}} \right )^{'}=\left ( {2x+{x}^{2}} \right ){e}^{x}\)
C.\(\left ( {\frac {{x}^{2}} {\ln {x}}} \right )^{'}=\frac {x-2\ln {x}} {\text{ln}^{2}x}\)
D.\(\left ( {{x}^{3}-\frac {1} {x}} \right )^{'}=3{x}^{2}+\frac {1} {{x}^{2}}\)
参考答案:ABD