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Mat. tanri I/6. 2. feladatsor megoldsai 1999. februr 18. 1. a) 1 + i =
 

Summary: Mat. tanári I/6. 2. feladatsor megoldásai 1999. február 18.
1. a) 1 + i =
p
2(cos 45 Ć + i sin 45 Ć ) ;
b)
p
3
2
+ i
1
2
= 1(cos 150 Ć + i sin 150 Ć ) ;
c) 1 i tg =
1
jcos j
cos( ) + i sin( )

;
d) (1 + i) 1999 = 2 1999=2 cos( 45 Ć ) + i sin( 45 Ć )


  

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

 

Collections: Mathematics