Summary: Mat tanári I/5. 1. feladatsor: megoldások 2001. feb. 7.
1. a) z = (3 - 4i)(7 + 8i) = 53 - 4i;
b) z =
3 - 4i
2 - i
=
(3 - 4i)(2 + i)
5
=
10 - 5i
5
= 2 - i ;
c) z = i1994
= (-1)
997
= -1 ;
d) z =
3 - i
1 + i
-

Source: Ágoston, István - Institute of Mathematics, Eötvös Loránd University

Collections: Mathematics