1.
\((1)\)关于\(x\)的不等式\(\dfrac{x-1}{x} < 2\)的解集是________.
\((2)\)\({{(\,\dfrac{16}{81}\,)}^{-\frac{3}{4}}}+{{\log }_{3}}\dfrac{5}{4}+{{\log }_{3}}\dfrac{4}{5}=\)________.
\((3)\)已知\(f\left( 1-{\cos }x \right)={si}{{{n}}^{2}}x\),则\(f\left( {{x}^{2}} \right)\)的解析式为__________.
\((4)\)若\(x\in (\,-\infty \,,\,-1\,]\),不等式\((\,m-{{m}^{2}}\,){{4}^{x}}+{{2}^{x}}+1 > 0\)恒成立,则实数\(m\)的取值范围是_______.