微分d^3x,(dx)^3,dx^3,有啥区别

来源:学生作业帮助网 编辑:作业帮 时间:2024/12/01 12:12:21
微分d^3x,(dx)^3,dx^3,有啥区别
x){oӎ8  8c lNөKzڱ&H(uv6ěRaR *M8!b@AM[8 سS.kM(hPWWRg`Rq-$ف]e]

微分d^3x,(dx)^3,dx^3,有啥区别
微分d^3x,(dx)^3,dx^3,有啥区别

微分d^3x,(dx)^3,dx^3,有啥区别
d^3x=d(d(dx)))
dx^3=dx·dx·dx
d(x^3)= 3x^2dx
比如x=f(t)
x'''=d^3x/dt^3 =d{d[dx/dt]/dt}/dt