Integral of cos(x^2) from 0 to infinity
14:42
Using Feynman's technique TWICE! (the integral of sin^3(x)/x^3 from 0 to inf)
7:27
Asking Laplace to help us solve the Fresnel integral without complex analysis
19:24
ONE OF THE COOLEST INTEGRALS EVER!!! int ln(x)/(1+e^x) from 0 to infty
11:29
Integral of 1/(x^3 + 1)
24:56
Integrate 1/(1+x^3)
15:00
integrate sqrt(x+1) over sqrt(x+2)
22:28
so you want a HARD integral from the Berkeley Math Tournament
15:01