∫【 u^（1/2）+1】（u-1) du =∫[ u^（3/2）+u-u^（1/2）-1)] du =∫ u^（3/2）du+∫udu-∫u^（1/2）du-∫1 du =2/5 u^（5/2）+1/2 u^2-2/3 u^(3/2)-u+C
