1.
\((1)\)直线\(\begin{cases} & x=3+t, \\ & y=\dfrac{1}{2}t \end{cases}(t\)为参数\()\)的斜率为________.
\((2)\)若“\(x^{2} > 1\)”是“\(x < a\)”的必要不充分条件,则\(a\)的最大值为________.
\((3)\)已知\(f(x)\begin{cases} & \dfrac{1}{f(x-1)}+1,0 < x < 1, \\ & x,-1 < x < 0, \end{cases}\)若方程\(f(x)-ax+2a=0(a\neq 0)\)有唯一解,则实数\(a\)的取值范围是________.
\((4)\)已知\(A=\{x||x-2| < 1\}\),\(B=\{x|\dfrac{5}{x-1}\geqslant 1\}\),\(C=\{x|1g(2ax) < 1g(a+x),a > 0\}\),若“\(x∈A∩B\)”是“\(x∈C\)”的充分不必要条件,则实数\(a\)的取值范围是________.