1 +  i 10 +  i − 10  = A.   1
B.   2
C.   3
D.   − 1
E.   − 2 + i
F.   −2
                     

[ 5-0859 - op net sinds 12.5.05-(E)-29.10.2023 ]

Translation in   E N G L I S H

see above

Oplossing - Solution

We houden rekening met   i4 = 1
1 + i10 + i−10 = i² + i−2 = 1 − 1 − 1 = −1