共50条信息
已知函数\(f\left(x\right)=\begin{cases}-{2}^{x},x\geqslant 0 \\ {\log }_{4}\left|x\right|,x < 0\end{cases} \),则\(f\left(f\left(4\right)\right) =\)___________.
函数\(y=\sqrt{3-x}+\ln (x-1)\)的定义域为\((\) \()\)
若集合\(M=\left\{x|y=\lg \dfrac{2-x}{x}\right\},N=\left\{x|x < 1\right\} \),则\(M∩{C}_{R}N \) \((\) \()\)
进入组卷