How to Prove an Equation Without Wikipedia?

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The discussion centers around the challenge of proving a specific equation, which is referenced but not detailed in the text. Participants note the difficulty in finding the equation on Wikipedia and highlight the irony of using Wikipedia as a source for proof. There is a humorous tone, with one contributor joking about citing oneself as an expert. The conversation reflects a broader frustration with the reliance on Wikipedia for academic validation. Ultimately, the thread underscores the need for reliable methods of proof beyond popular online resources.
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How can I prove this equation:

it is attached in a photo.
 

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Which equation? There are at least three, and some use the same variables.
 
the equation which is circled
 
It seems that the easiest way these days is to post it to Wikipedia and then cite it as a source...
 
I didn't find it on wikipedia
 
wmsaqqa said:
I didn't find it on wikipedia

Sorry, that was a joke (as is almost everything that I post). What I meant was that if you just want to prove it, you post it on Wikipedia and then cite yourself as the expert for proof. Ah, never mind... I'm just just babbling now...
 

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