Represent z as ; then . See here for multiplication and division on complex numbers.

Results 1 to 11 of 11

- Sep 18th 2012, 03:26 AM #1

- Joined
- Sep 2012
- From
- Sweden
- Posts
- 250
- Thanks
- 6

- Sep 18th 2012, 03:34 AM #2

- Joined
- Oct 2009
- Posts
- 5,573
- Thanks
- 789

- Sep 18th 2012, 03:34 AM #3

- Sep 18th 2012, 03:45 AM #4

- Joined
- Sep 2012
- From
- Sweden
- Posts
- 250
- Thanks
- 6

- Sep 18th 2012, 04:00 AM #5

- Sep 18th 2012, 04:09 AM #6

- Joined
- Sep 2012
- From
- Sweden
- Posts
- 250
- Thanks
- 6

- Sep 18th 2012, 05:05 AM #7

- Joined
- Apr 2005
- Posts
- 18,289
- Thanks
- 2459

- Sep 18th 2012, 05:30 AM #8

- Joined
- Sep 2012
- From
- Sweden
- Posts
- 250
- Thanks
- 6

- Sep 18th 2012, 06:10 AM #9
## Re: help

Yes, that is correct. So you now have:

We factor out the 7 from the denominator to help keep the computations simple.

So, multiply the complex fraction by the conjugate of the denominator:

This will cause the denominator to be real, and you will then have the complex number in rectangular form.

- Sep 18th 2012, 06:32 AM #10

- Sep 18th 2012, 03:26 PM #11