给你求解的式子:
[0.7*0.7*0.7*(1-0.6*0.6*0.6)]+[(3*0.7*0.7*0.3)*(0.4*0.4*0.4+0.4*0.4*0.6*3)]+[(0.7*0.3*0.3*3)*(0.4*0.4*0.4)]=自己算下
为什么你看下我还要说不
要说下次一定解释
给你求解的式子:
[0.7*0.7*0.7*(1-0.6*0.6*0.6)]+[(3*0.7*0.7*0.3)*(0.4*0.4*0.4+0.4*0.4*0.6*3)]+[(0.7*0.3*0.3*3)*(0.4*0.4*0.4)]=自己算下
为什么你看下我还要说不
要说下次一定解释