Check what?
Posted from TSR Mobile
Posted from TSR Mobile
Original post by meme12
x
Remember that (x^c)^2 = ...
And think about where this applies in your calculations.
Original post by meme12
Please could some one check this
squaring eiθ is ei2θ and not what you wrote there
Original post by TeeEm
squaring eiθ is ei2θ and not what you wrote there
Yes you are right , how do I get that is equal to one any idea
Original post by meme12
What I did so far is right if e^2iphi is equal to one
ei2θ = cos2θ + isin2θ
Original post by meme12
Tee can you send me the site address , mad for math .
look in my profile
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[ eiθ +e-iθ]
sinθ =1/(2i)[ eiθ - e-iθ]
and
[eiθ ]2 is ei2θ and not what you wrote there
(edited 8 years ago)
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 .
http://madasmaths.com/
Original post by TeeEm
some very nice resources there. Many thanks for sharing.
Original post by dpm
some very nice resources there. Many thanks for sharing.
thank you
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