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seventy years young student of maths is fun
Divide both sides by 2
3^x both sides.
Welcome to the forum, young man.
In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
Character is who you are when no one is looking.