一维线性谐振子处在基态 psi (x)=sqrt (alpha /sqrt {pi )}(e)^-dfrac (1{2)(a)^2(x)^2} ,求-|||-(1)势能的期望值 overline (U)=dfrac (1)(2)m(omega )^2overline ({x)^2} ;-|||-(2)动能的期望值 overline (T)=dfrac (1)(2m)overline (p)^2 ;-|||-(3)动量的概率分布函数.