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KEAM 2020 Math Paper
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© examsnet.com
Question : 12
Total: 120
Let
z
1
and
z
2
be complex numbers satisfying
|
z
1
|
=
|
z
2
|
=
2
and
|
z
1
+
z
2
|
=
3
.Then
|
1
z
1
+
1
z
2
|
=
3
2
2
3
4
1
2
4
Validate
Solution:
|
1
z
1
+
1
z
2
|
=
|
z
1
+
z
i
z
1
z
2
|
=
|
z
1
+
z
2
|
|
z
1
z
2
|
=
3
4
© examsnet.com
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