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Solving integrals/ tg(x)*ln(cosx)dx

Integral of tg(x)*ln(cosx)dx dx

Limits of integration:

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v

The graph:

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Piecewise:

The solution

You have entered [src] 
 pi                      
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 |  tan(x)*log(cos(x)) dx
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0
$$\int\limits_{0}^{\frac{\pi}{3}} \log{\left(\cos{\left(x \right)} \right)} \tan{\left(x \right)}\, dx$$ 
Integral(tan(x)*log(cos(x)), (x, 0, pi/3))
The answer (Indefinite) [src] 
  /                               2        
 |                             log (cos(x))
 | tan(x)*log(cos(x)) dx = C - ------------
 |                                  2      
/
$$\int \log{\left(\cos{\left(x \right)} \right)} \tan{\left(x \right)}\, dx = C - \frac{\log{\left(\cos{\left(x \right)} \right)}^{2}}{2}$$
Simplify
Numerical answer [src] 
-0.240226506959101
-0.240226506959101

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

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