Evaluate the following integral:

Let us assume



since logmn = logm + logn and log(m)n = nlogm



.......equation (a)


Let


We know that


If f(2a – x) = f(x)


than


thus


………equation 1


since logsin(π – x) = logsinx


By property, we know that



………equation 2


Adding equation 1 and equation 2


+


We know




We know logm + logn = logmn thus




since log(m/n) = logm – logn


.....equation 3


Let


Let 2x = y


2dx = dy


dx = dy/2


For x = 0


y = 0


for


y = π


thus substituting value in I1



From equation 3 we get




Thus substituting the value of I2 in equation 3








Substituting in equation (a) i.e





I =


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