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VITEEE 2017 Solved Paper
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© examsnet.com
Question : 98
Total: 125
If z =
7
−
i
3
−
4
i
then
z
14
=
2
7
2
7
i
2
14
i
-
2
7
i
Validate
Solution:
z =
7
−
i
3
−
4
i
×
3
+
4
i
3
+
4
i
=
21
+
25
i
+
4
16
+
9
=
25
(
1
+
i
)
25
= (1 + i)
z
14
=
(
1
+
i
)
14
=
[
(
1
+
i
)
2
]
7
=
(
2
i
)
7
=
2
7
i
7
= -
2
7
i
© examsnet.com
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