Can you simplify # cos(x)cos(2x)cos(4x)cos(8x)cos(16x) ... cos(2^n x) # ?,
1 Answer
Feb 8, 2018
Explanation:
We want to simplify
The trick is to use the double-angle identity repeatedly
#sin(2x)=2cos(x)sin(x)#
Consider the following example
If we generalize it