Thursday 8 November 2018

logarithms - Find the sum of the geometric sequence

$$1+ \frac12 + \frac14+\dots+\frac1{2^n}$$



To find the sum of the equation you have to find $n$, the number of terms in the geometric sequence and I don't know how...




The answer in the text book is $2-\frac1{2^n}$.

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real analysis - How to find $lim_{hrightarrow 0}frac{sin(ha)}{h}$

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