题2: 33.已知函数$f(x)=\left\{\begin{array}{l}{-\frac{1}{2}{x}^{2}+3,x<2,}\\ {lo{g}_{2}x,x
基础fill_compute
题9: 27.已知函数$f(x)=\left\{\begin{array}{l}{x}^{2}+2x-3,x\leqslant 0\\ -2+lnx,x>0\end{a
基础fill_compute
题19: 30. 设$max\{a,b\}=\left\{\begin{array}{l}{a,a\geqslant b,}\\ {b,a<b\cdot }\end{ar
基础fill_compute
题35: 34.已知$f(x)=\left\{{\left.\begin{array}{l}{\frac{1}{3}x+1,x\leqslant 0}\\ {\vert
简单fill_compute
题46: 28.已知函数$f(x)=\frac{{e}^{x}+{e}^{-x}}{2}+ln\vert x\vert$,$x\in [-2$,$0)\bigcup (0
简单fill_compute
题56: 12.已知函数$f(x)=\left\{{\left.\begin{array}{l}{{2^x},}&{x\leqslant 1}\\ {lo{g_2}x,}
简单fill_compute
题60: 16.已知函数$f(x)=\left\{\begin{array}{l}{(x+1)^{2},x\leqslant 0}\\ {lnx,x>0}\end{arr
简单fill_compute
题64: 26.已知函数$f(x)$的定义域为$R$,对任意$x_{1}<x_{2}$,有$\frac{f({x_1})-f({x_2})}{{x_1}-{x_2}}>-
简单fill_compute
题71: 25.方程$lg(\sqrt{3}\sin x)=lg(\cos x)$的解集为___$\{x\vert x=2k\pi +\frac{\pi }{6}$[,]
中等fill_compute
题72: 24.已知函数$f(x)=\left\{\begin{array}{l}{x^2}+4x+2({x<0})\\ {2^{\vert {x-1}\vert }}(
中等fill_compute
题73: 36.已知函数$f(x)=\left\{{\left.\begin{array}{l}{\frac{2^x}{4}-2,x\geqslant a,}\\ {{x
中等fill_compute
题81: 35.若对任意$a\in [2$,$3]$,关于$x$的方程$\log _{a}x=b-x$在区间$[2$,$3]$上总有实根,则实数$b$的取值范围是 ___
中等fill_compute
题85: 34. 设$a\in R$,对任意实数$x$,记$f(x)=min\{e^{x}-2$,$e^{2x}-ae^{x}+a+24\}$.若$f(x)$有三个零点,
中等fill_compute
题99: 11.对于函数$f(x)$、$g(x)$,设$m\in \{x\vert f(x)=0\}$,$n=\{x\vert g(x)=0\}$,若存在$m$、$n$使
中等fill_compute
题107: 38.定义函数$min\left\{{f(x),g(x)}\right\}=\left\{{\left.\begin{array}{l}{f(x),f(x)\l
中等fill_compute