- #1
- 456
- 19
i have to prove that the sum of the follwing infinite series is irrational.
[tex]\frac{1}{2^3} + \frac{1}{2^9} + \frac{1}{2^{27}} + \frac{1}{2^{81}} + \cdots[/tex]
i have no idea where to begin. thanks in advance.
note: this is not a homewrok problem.
[tex]\frac{1}{2^3} + \frac{1}{2^9} + \frac{1}{2^{27}} + \frac{1}{2^{81}} + \cdots[/tex]
i have no idea where to begin. thanks in advance.
note: this is not a homewrok problem.