Is there a quick way to obtain the power series for ln(cos x) ?
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Originally Posted by Stuck Man Is there a quick way to obtain the power series for ln(cos x) ? The simple answer is no.
How is it done?
FP2 - Maclaurin and Taylor Series - The Student Room What is the x in ln(1+x) that someone is talking about there?
Originally Posted by Stuck Man Is there a quick way to obtain the power series for ln(cos x) ? Yes there is, though you have to be a bit liberal with some absolute values. , so integrate the series for tan(x).
I had done it that way. Is the series valid for the same domain as the tan x series? That is -pi/2 < x < pi/2. I still don't understand the method used at The Student Room.
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