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log(i^2)

Sum of series log(i^2)



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The solution

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i = 2        
$$\sum_{i=2}^{\infty} \log{\left(i^{2} \right)}$$
Sum(log(i^2), (i, 2, oo))
The radius of convergence of the power series
Given number:
$$\log{\left(i^{2} \right)}$$
It is a series of species
$$a_{i} \left(c x - x_{0}\right)^{d i}$$
- power series.
The radius of convergence of a power series can be calculated by the formula:
$$R^{d} = \frac{x_{0} + \lim_{i \to \infty} \left|{\frac{a_{i}}{a_{i + 1}}}\right|}{c}$$
In this case
$$a_{i} = \log{\left(i^{2} \right)}$$
and
$$x_{0} = 0$$
,
$$d = 0$$
,
$$c = 1$$
then
$$1 = \lim_{i \to \infty}\left(\frac{\left|{\log{\left(i^{2} \right)}}\right|}{\log{\left(\left(i + 1\right)^{2} \right)}}\right)$$
Let's take the limit
we find
True

False
The rate of convergence of the power series
Numerical answer
The series diverges
The graph
Sum of series log(i^2)

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