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“I didn't speed up the video, I sped up myself“... bprp, integral of 1/(x^4 1), factor x^4 1, partial fraction of 1/(x^4 1), complete the square for x^2-sqrt(2)x 1, integral by u-sub, hard calc 2 integral, supreme integral, difficult integral, integral of 1/(x^4 1) by Brute-force, blackpenredpen, math for fun,
