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QUESTION
an(-x) ln( | -x | ) = -tanx ln ( |x| ) may I ask the negative sign before tanx in the second part of the equation comes from tan (-x) or ln ( |-x| ) ?...
For tan(-x) ln( | -x | ) = -tanx ln ( |x| )
may I ask the negative sign before tanx in the second part of the equation comes from tan (-x) or ln ( |-x| ) ? Thanks : ) Please give me simple solution if you are available : )
