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Solving integrals/ xe^(-0.05x)

Integral of xe^(-0.05x) dx

Limits of integration:

from to
v

The graph:

from to

Piecewise:

The solution

You have entered [src] 
 oo          
  /          
 |           
 |     -x    
 |     ---   
 |      20   
 |  x*E    dx
 |           
/            
0
$$\int\limits_{0}^{\infty} e^{- \frac{x}{20}} x\, dx$$ 
Integral(x*E^(-x/20), (x, 0, oo))
The answer (Indefinite) [src] 
  /                                  
 |                                   
 |    -x                          -x 
 |    ---                         ---
 |     20                          20
 | x*E    dx = C + (-400 - 20*x)*e   
 |                                   
/
$$\int e^{- \frac{x}{20}} x\, dx = C + \left(- 20 x - 400\right) e^{- \frac{x}{20}}$$
Simplify
The graph
Plot the graph f(x)
The answer [src] 
400
$$400$$ 
=
= 
400
$$400$$ 
400

    Use the examples entering the upper and lower limits of integration.

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