Mister Exam

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Sum of series:
x^n/2^n
factorial(n)*3^n/n^n
sin^2(1/4n)
-3
Integral of d{x}:
-3
Derivative of:
-3
Limit of the function:
-3
Identical expressions
- three
minus 3
minus three
Similar expressions
sin(nx)*(5-(3*n))
3

Sum of series/ -3

Sum of series -3

The solution

You have entered [src]

  39    
 __     
 \ `    
  )   -3
 /_,    
n = 1

\sum_{n=1}^{39} -3

Sum(-3, (n, 1, 39))

The rate of convergence of the power series

The answer [src]

-117

-117

-117

Numerical answer [src]

-117.000000000000000000000000000

-117.000000000000000000000000000

The graph

Sum of series -3

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
```