hlp me solve...

乖学生

1. If u = (3-7i)/(5-2i) and w = (2-8i)/(4+i), express u and w in forms of a+ib, where a and b are real.
(a.) Show that w = u^2
(b.) Find the least positive intergers m and n such that u^m and w^n are both real and positive.

walrein_lim88

1. If u = (3-7i)/(5-2i) and w = (2-8i)/(4+i), express u and w in forms of a+ib, where a and b are re ...
乖学生 发表于 15-6-2010 12:31 PM