Hi everybody,

F(z)= (cosy+isiny), i must show that F( )=F( ).F( )

can you help me please???

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- Apr 18th 2010, 09:19 AMbhitroofen01complex function
Hi everybody,

F(z)= (cosy+isiny), i must show that F( )=F( ).F( )

can you help me please??? - Apr 18th 2010, 06:24 PMhollywood
You'll find it a lot easier if you recognize that .

Post again if you can't finish it from there.

- Hollywood - Apr 19th 2010, 04:02 AMHallsofIvy
The hard way to do it, if you don't have that formula yet, is to use trig identities.

Of course, .

Also, and so that - Apr 19th 2010, 05:45 AMtonio