Jawab dulu soal integral

Jawab dulu soal integral

1)
$5{1 : 2x : dx : = 5{1 : {x}^{2} \ = 5 {}^{2} - {1}^{2} = 25 - 1 = 24$
2)
$2{0 : (2x - 1) {}^{3} dx : = frac{1}{2(4)} (2x - 1) {}^{4} \ = frac{1}{8} (2x - 1) {}^{4} \ = frac{1}{8} (2.5 - 1) {}^{4} - frac{1}{8} (2.0 - 1) {}^{4} \ = frac{6561}{8} - frac{1}{8} \ = frac{6560}{8} = 820$