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OCW Scholar - Single Variable Calculus 7 Online
OpenStudy (anonymous):

Is there a way I can type math equations in this forum? I would like to ask some question but I don't know how to write some notation. Thus I capture the image of my question and I hope you can help me. It is about how to find a root of quadratic equation using deMoivre. http://dl.dropbox.com/u/63664351/Trigonometry%201.PNG

OpenStudy (anonymous):

I get to the point where \[\cos x =16 \cos^5 x - 20 \cos^3 x + 5 \cos x\]

OpenStudy (anonymous):

Don't worry I find it out! :)

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