Given the sets A\displaystyle {A} and B\displaystyle {B} in interval notation, A=(,1)(1,+)\displaystyle {A}={\left(-\infty,-{1}\right)}\cup{\left(-{1},+\infty\right)} and B=(,3)(3,+)\displaystyle {B}={\left(-\infty,-{3}\right)}\cup{\left(-{3},+\infty\right)} find AB=\displaystyle {A}\cap{B}=