Mister Exam

Lang:

Other calculators

How to use it?
Sum of series:
n^2*sin(5/(3^n))
n*2^n
n^(1/n)
(n^2+5)/2^n
Limit of the function:
n^(1/n)
Identical expressions
n^(one /n)
n to the power of (1 divide by n)
n to the power of (one divide by n)
n(1/n)
n1/n
n^1/n
n^(1 divide by n)

Sum of series/ n^(1/n)

Sum of series n^(1/n)

The solution

You have entered [src]

  oo       
 ___       
 \  `      
  \   n ___
  /   \/ n 
 /__,      
n = 1

$$\sum_{n=1}^{\infty} n^{\frac{1}{n}}$$

Sum(n^(1/n), (n, 1, oo))

The radius of convergence of the power series

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

True

False

The rate of convergence of the power series

The graph

Examples of finding the sum of a series

The Sum of the Power Series
```
x^n/n
```
```
(x-1)^n
```
Factorial
```
1/2^(n!)
```
```
n^2/n!
```
```
x^n/n!
```
```
k!/(n!*(n+k)!)
```
Flint Hills Series
```
csc(n)^2/n^3
```
Basel problem
```
1/n^2
```
```
1/n^4
```
```
1/n^6
```
Harmonic series
```
1/n
```
Grandi's series
```
(-1)^n
```
Alternating series
```
(-1)^(n + 1)/n
```
```
(n + 2)*(-1)^(n - 1)
```
```
(3*n - 1)/(-5)^n
```
```
(-1)^(n - 1)*n/(6*n - 5)
```
Newton–Mercator series
```
(-1)^(n + 1)/n*x^n
```
Exam the series for convergence
```
(3*n - 1)/(-5)^n
```

Other calculators

How to use it?

Identical expressions

Sum of series n^(1/n)

The solution

Examples of finding the sum of a series