+633 I need to know the other equation.
Original link: http://web2.0calc.com/questions/very-hard-math-question-for-my-profile-picture
What I know:
Can be graphed with \(x^y=y^x\textrm{ or } \log_x({y})=\log_y({x})\)
Self-intersection: (e,e) [question: Why (e,e)?]
One of the equations is y = x.
WHAT IS THE OTHER EQUATION and WHY!?!?!?!?!
Please help 
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