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Integral of e^(5x)*cos(4x) dx

Limits of integration:

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The graph:

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Piecewise:

The solution

You have entered [src]
 pi                 
 --                 
 8                  
  /                 
 |                  
 |   5*x            
 |  E   *cos(4*x) dx
 |                  
/                   
pi                  
--                  
4                   
$$\int\limits_{\frac{\pi}{4}}^{\frac{\pi}{8}} e^{5 x} \cos{\left(4 x \right)}\, dx$$
Integral(E^(5*x)*cos(4*x), (x, pi/4, pi/8))
The answer (Indefinite) [src]
  /                                                        
 |                           5*x                        5*x
 |  5*x                   4*e   *sin(4*x)   5*cos(4*x)*e   
 | E   *cos(4*x) dx = C + --------------- + ---------------
 |                               41                41      
/                                                          
$$\int e^{5 x} \cos{\left(4 x \right)}\, dx = C + \frac{4 e^{5 x} \sin{\left(4 x \right)}}{41} + \frac{5 e^{5 x} \cos{\left(4 x \right)}}{41}$$
The graph
The answer [src]
   5*pi      5*pi
   ----      ----
    8         4  
4*e       5*e    
------- + -------
   41        41  
$$\frac{4 e^{\frac{5 \pi}{8}}}{41} + \frac{5 e^{\frac{5 \pi}{4}}}{41}$$
=
=
   5*pi      5*pi
   ----      ----
    8         4  
4*e       5*e    
------- + -------
   41        41  
$$\frac{4 e^{\frac{5 \pi}{8}}}{41} + \frac{5 e^{\frac{5 \pi}{4}}}{41}$$
4*exp(5*pi/8)/41 + 5*exp(5*pi/4)/41
Numerical answer [src]
6.88455706564763
6.88455706564763

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