x Turn on thread page Beta
 You are Here: Home >< Maths

# Complex numbers watch

1. Please could some one check this
Attached Images

2. Check what?

Posted from TSR Mobile
3. (Original post by meme12)
x
Remember that (x^c)^2 = ...

4. (Original post by meme12)
Please could some one check this
squaring eis ei2θ and not what you wrote there
5. (Original post by TeeEm)
squaring eis ei2θ and not what you wrote there

Yes you are right , how do I get that is equal to one any idea
6. ei2θ = cos2θ + isin2θ
7. What I did so far is right if e^2iphi is equal to one
8. (Original post by meme12)
What I did so far is right if e^2iphi is equal to one
ei2θ = cos2θ + isin2θ
9. Tee can you send me the site address , mad for math .
10. (Original post by meme12)
Tee can you send me the site address , mad for math .
look in my profile
11. (Original post by meme12)
Tee can you send me the site address , mad for math .
sorry I was busy earlier

there are 2 mistakes

cosθ =1/2[ e +e-iθ]
sinθ =1/(2i)[ e - e-iθ]

and

[e]2 is ei2θ and not what you wrote there
12. It's ok , I did still didn't make difference , I have to try different way I think , I couldn't find that site in your profile .
13. (Original post by meme12)
It's ok , I did still didn't make difference , I have to try different way I think , I couldn't find that site in your profile .
14. some very nice resources there. Many thanks for sharing.
15. (Original post by dpm)
some very nice resources there. Many thanks for sharing.
thank you
16. Yes I find it very useful thx.

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: October 18, 2015
Today on TSR

### How much will your degree earn you?

Find out where yours ranks...

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams