已知函数\(f\)\((\)\(x\)\()=\)\(x\)\({\,\!}^{3}-3\)\(ax\)\(-1\),\(a\)\(\neq 0\).
\((1)\)若\(f\)\((\)\(x\)\()\)的单调区间;
\((2)\)若\(f\)\((\)\(x\)\()\)在\(x\)\(=-1\)处取得极值,且函数\(g\)\((\)\(x\)\()=\)\(f\)\((\)\(x\)\()-\)\(m\)有三个零点,求实数\(m\)的取值范围;
\((3)\)设\(h\)\((\)\(x\)\()=\)\(f\)\((\)\(x\)\()+(3\)\(a\)\(-1)\)\(x\)\(+1\),证明过点\(P\)\((2,1)\)查以作曲线\(h\)\((\)\(x\)\()\)的三条切线.