Integral x pangkat 3 akar x pangkat 4 +11 dx

integral x³√(x⁴+11) dx
Misal
u = x⁴+11
maka
du/dx = 4x³
dx = du/4x³
sehingga
integral x³ u^½ du/4x³
(1/4) . ⅔u^3/2 + C
1/6(u^3/2) + C
1/6(u√u) + C
(1/6)(x⁴+11)(√(x⁴+11))+ C