For region II 21 +=E 0 2 方 s2+2mh-E=0 土(-2m)h=±(2mE)h i(2mE)2x i(2mEy2x ce 方 方 0=(2mExh-I yu=ce tce e8= cos 0+isin e-19=cos0-isin 0 Wu=C cos 6+ic, sin 8+c2 cos 6-ic, sin e =(C+c,cos 0+(ic -ic,)sin e