\((1){{(\left| x \right|+\dfrac{1}{\left| x \right|}-2)}^{3}}\)展开中的常数项是_________________．
\((2)\)在极坐标系中，两条曲线\({{C}_{1}}:\rho \sin (\theta +\dfrac{\pi }{4})=1\)，\({{C}_{2}}:\rho =\sqrt{2}\)的交点为\(A,B\)，则\(\left| AB \right|=\) _________．
\((3)\)已知随机变量\(X\tilde{\ }B\left( 2,p \right)\)，\(Y\tilde{\ }N\left( 2,{{\sigma }^{2}} \right)\)，若\(P\left( X\geqslant 1 \right)=0.64\)，\(P(0 < Y < 2)=p\)，则\(P(Y > 4)=\)__________．
\((4)\)已知函数\(f\left( x \right)=2\sin x+\sin 2x\)，则\(f\left( x \right)\)的最小值是_____________．