... x 3 )−2 3 ) 30 .dx√x 3 31+4√x 3 .(DS. −2 3 (x− 3 4+1)2) 31 .dx 3 √x2( 3 √x +1) 3 .(DS. − 3 2( 3 √x +1)2) 32 . 3 √x 3 √x +1dx.(DS. 6u77− 3 5u5+ u 3 −u2,u2= 3 √x +1) 33 .dxx6√x2− ... so.cˆa´p 43 T`u.d´ox 3 =1t 3 − 1, 1+x 3 =t 3 t 3 − 1,x=(t 3 − 1)−1 3 dx = −t2(t 3 − 1)−4 3 dt, x−2=(t 3 − 1)2 3 .Do vˆa.yI 3 = −(t 3 −1)2 /3 t 3 t 3 − 1−5 /3 t2(t 3 − ... 1.(DS.u55−2u 3 3+ u, u =√1 −x−2) 34 .dxx 3 √1+x5.(DS.110lnu2−2u +1u2+ u +1+√ 3 5arctg2u +1√ 3 ,u 3 =1+x5) 35 .x7√1+x2dx.(DS.u99−3u77+3u55−u 3 3,u2=1+x2)...