∑[n=1,∞,((-1)^(n-1))/(4^(n)(x-1)^(2n))]
Series

Question

jamesj · Answer

So what's your question about this?

jamesj · Answer

(@across, apropos our last conversation, this is where I do try and educate as at least the mathematics is somewhat coherent.)

anonymous · Answer

@JamesJ
Series
i'm bad in series

jamesj · Answer

But what in particular do you want to know?  Do you want to know the x for which this converges?  Or are you looking for an expression for this series?  Or what?  

Ask a well posed question.

anonymous · Answer

ya ,,
expression

jamesj · Answer

Use the method of your last question.  Try and find an expression r such that your sum is

$$ \sum_{n=1}^\infty ar^n $$  Then you can use the expression for the sum of r^n we used last time.

anonymous · Answer

tnx.....