Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Evaluate : 
, where a 1 , a 2 , a 3 , ...... , a n ∈ R.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Sol. Let L n+1 = 
⇒ L n+1 = 
⇒ L n+1 = 
⇒ L n+1 = 
+ 
cos (a n+1 x) . L n ⇒ L n+1 = 
+ L n
L 1 = 
; L 2 = 
+ L 1 = 
+ 
L 3 = 
+ L 2 = 
+ 
+ 
; L n = 
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