|COMPLEXE NUMBERS| Show that...? Thank you!
Show that: Is n ∈ ℤ, than
#((1+i)^n + (1-i)^n)/2 = (sqrt(2))^n * cos (n * 45°)#
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Show that: Is n ∈ ℤ, than
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1 Answer
Jan 14, 2018
See below.
Explanation:
We know that