Question

Find the complex conjugate of each complex number.

10. 1 -2i

11.3+5i

12. i

13.3-i

14. 2 +3i

15. -5-2i

Answer 1

The complex conjugate of  a complex number a + bi is a - ib and

The complex conjugate of  a complex number a - bi is a + ib.

10)

1 - 2i

The complex conjugate of  a complex number 1 - 2i is 1 + 2i.

11)

3 + 5i

The complex conjugate of  a complex number 3 + 5i is 3 - 5i

12)

i

The complex conjugate of  a complex number i is - i.

13)

3 - i

The complex conjugate of  a complex number 3 - i is 3 + i.

14)

2 + 3i

The complex conjugate of  a complex number 2 + 3i is 2-3i.

15)

-5 - 2i

The complex conjugate of  a complex number -5 - 2i is -5 + 2i.

Answer :

10. 1 + 2i

11.3 - 5i

12. -i

13.3 + i

14. 2 - 3i

15. - 5 + 2i