Find the multiplicative inverse of each of the complex numbers given in the
Exercises 11 to 13.
11. 4 – 3i 12. 5 3 + i 13. – i
14. Express the following expression in the form of a + ib :
( ) ( )
( ) ( )
Express each of the complex number given in the Exercises 1 to 10 in the
form a + ib.
4. 3(7 + i7) + i (7 + i7) 5. (1 – i) – ( –1 + i6)
6.
1 2 5 4
5 5 2
i i + − + 7.
1 7 1 4 4
3 3 3 3
i i i
+ + + − − +
8. (1 – i)
4 9.
3
1
3
3
i
+
10.
3
1
2
3
i
− −
Express each of the complex number given in the Exercises 1 to 10 in the
form a + ib.
4. 3(7 + i7) + i (7 + i7) 5. (1 – i) – ( –1 + i6)
6.
1 2 5 4
5 5 2
i i + − + 7.
1 7 1 4 4
3 3 3 3
i i i
+ + + − − +
8. (1 – i)
4 9.
3
1
3
3
i
+
10.
3
1
2
3
i
− −
Express each of the complex number given in the Exercises 1 to 10 in the
form a + ib.
1. ( ) 3
5
5
i i
− 2. i i
9 19
+ 3. i
−39
Express the following in the form a + ib
(i)
5 2
1 2
i
i
+
−
(ii) i–35
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