Published by:
CGP EDU Academic Team
Published on: August 12, 2026
If 
, then f (x) is equal to
A
B
C
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
B
Here I = Rear part of 
= 
= 
= e (1+i)x 
= e x [cos x + i sin x] 
= 
= 
[(1-x) sin x – x cos x] + c = 
[x cos x + (x – 1) sin x] + c
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