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anonymous
 5 years ago
Evaluate ((e^(ix) + e^(ix)) / 2) + ((e^(ix) + e^(ix)) / 2i) where i=√1
anonymous
 5 years ago
Evaluate ((e^(ix) + e^(ix)) / 2) + ((e^(ix) + e^(ix)) / 2i) where i=√1

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0could you explain to me how you got there?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0e^ix is cosx + isinx e^(ix) is cosx  isinx so their sum is 2cosx

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so its cosx + (cosx)/i

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh okay. thanks a lot! we never learned that in class =/

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0u dint know this formula?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0no i didn't. i guess i should have googled it first, it was the first page

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0see shall i teach u things abt complex nos??

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I think I've got the rest, at least the ones that I'm being tested on. Could you teach me arcsin relationships with sin and stuff? For example, tan(arcsin x +arccosx)for x is equal to or between 0 and 1. How would I start?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ur answer is infinity

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0There's no answer for x where x is equal to or between 0 and 1?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0no i dont think so cos arcsinx + arccosx = pi/2 for all values of x so its tan (pi/2)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Oh right I get it, thank you so much!
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