Hi,

I have noticed an issue when evaluating a natural log as a function, I am getting seemingly random additions of a multiple of i.

If I evaluate the expression, it for some reason adds a multiple of i to the correct, real portion of that.

For example suppose I have the function f(a)=ln((a-1)/(a+1)). If I evaluate this at a=1.3921, I should get the answer f(1.3921)=-1.8084. But the function returns f(1.3921) = -1.8085+3.1416*i. It appears to be adding 3.1416*i (pi*i). I have to get around this by using Re(). Am I missing something or is this an error?

I can't replicate the issue. Maybe you have something different in SMath settings (Tools > Settings... > Calculation > Answer).

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Thank you for your reply. I have tried to replicate it again myself but I have been unable to as well. I will find the worksheet it originally happened in and will try to post the issue.