Here are some fun integral challenges problems to start the day. Comment your solutions! 
#math #mathematics #calculus #Integration #integrals #mathproblemspic.twitter.com/PDUGbF3mTw
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I still have PTSD after trying to u sub my way through that integral of ln(tanx)dx @stevenstrogatz posted 

Or maybe ln(sinx)
Only one way to Carnegie Hall...
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