int (ln (x+sqrt(x^2 -1))
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Integrate(sqrt (5-4x-x^2 ))
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The Easiest Integral on YouTube
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Integrating Lambert W Function
7:27
HARD Integration by Parts - (x^3e^x^2/(1+x^2)^2dx)
24:56
Integrate 1/(1+x^3)
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Integral of ln(x+sqrt(1+x^2)) (by parts)
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Trig substitution integration (x=a*sinθ, 4 examples, calculus 2)
15:00