+0  
 
0
35
1
avatar

Use DeMoivre’s Theorem to find the following:

5(cis 7π/4)^4

 May 14, 2020
 #1
avatar+109492 
+1

I have no idea what DeMoive's theorem is but this is just

 

\(5*e^{7\pi i}\\=5e^{\pi i } \\= 5(cos\pi+isin\pi)\\=5(-1+0)\\=-5\)

.
 May 14, 2020

22 Online Users

avatar