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A+
Evaluate:
(i)
(ii)
(i)
=
+
(Since
= i)
2i
Hence,
= 2i
(ii)
+
(since
= i
= -1)
0
Hence,
= 0
1
=
+
(Since 
= i)
2i
= 2i
+
(since 
= i
= -1)
0
= 0=+ (Since = i) 2i = 2i+ (since = i= -1)0 = 0