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Mathematics 20 Online
OpenStudy (unklerhaukus):

Simplify: \[\ln(\cos x + i\sin x)\]

OpenStudy (sidsiddhartha):

\[cosx+isinx=e^{ix}\]

OpenStudy (anonymous):

Is there a trick to this one? Otherwise it just appears to simplify to ix.

OpenStudy (unklerhaukus):

youse got it

OpenStudy (sidsiddhartha):

oh yeah !! lol :)

OpenStudy (sidsiddhartha):

sometimes it is written as-- \[\cos \theta+i \sin \theta=CIS( \theta)\]

OpenStudy (sidsiddhartha):

just to confuse us

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