Feynman Technique, The Key to ALL Integrals!
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Solving the hardest integral on math stack exchange (cleo's monster integral)
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The Secret to Mastering U sub with the Feynman Technique!
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Solve MOST Integration Problems with This One Trick
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when Feynman's integration trick doesn't work...
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5:42
Learn the derivative of the factorial function in just 6 MINUTES!
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20:37
Integrate x^-x dx
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22:40
What Integration Technique Should I Use? (trig sub, u sub, DI method, partial fractions) calculus 2
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