ln(-5)=? || concept of natural logarithm of negative number ||

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Hey guys!!!
Welcome to 6or9...
Natural logarithm is known to all
But....In the Real world, natural logarithm is only valid for positive number...
But did you ever wonder what is the natural log of a negative number???
Well, that doesn't exist in real world, you. Need to go to the dark side for this...I mean to complex world...yes...It's possible to evaluate natural log of a negative number in complex world...& Believe me,. It's soo cool
I hope you're going to enjoy it...
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