∫(1,0) ce^xdx = ce^x|(1,0)=c(e-1)= 1解出:c = 1/(e-1)如果:f=cx^4C∫(3,0)x^4dx=Cx^5|(3,0)/5 = C(3^5)/5=1解出:C=5/243
进行定积分,等于1