( t ( 3 ) − 1 ) ( t ( 4 ) − 1 ) 2 ( t ( 2 ) t ( 4 ) − t ( 1 ) ) t ( 1 ) t ( 2 ) t ( 3 ) t ( 4 ) 3 / 2 {\displaystyle {\frac {(t(3)-1)(t(4)-1)^{2}(t(2)t(4)-t(1))}{{\sqrt {t(1)}}{\sqrt {t(2)}}{\sqrt {t(3)}}t(4)^{3/2}}}}
