I need help on calc 2

Question

find integral 

 

intergral of tan(ln(x))/x dx

Answer 1

Good evening Bob:

 

To solve this integral, we're going to have to make use of the substitution method. The key substitution here is...

 

Let u = ln(x).

     du= dx/ x 

 

Substitute in and solve. Oh, and don't forget the constant of integration.