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(1)−∫rkddr(ϕ(r)f(r))dr= 文献里面这么给的 (2)−∫rkddr(ϕ(r)f(r))dr=∫krk−1ϕ(r)f(r)dr 这事我算的: (3)−∫rkddr(ϕ(r)f(r))dr=−∫rkd[ϕ(r)f(r)]=−(rkϕ(r)f(r)−∫ϕ(r)f(r)drk)=−rkϕ(r)f(r)+k∫rk−1ϕ(r)f(r)dr 后面怎么多出来这个项:−rkϕ(r)f(r)?
这个是文献里面的。怎么回事呢。
推导的时候忘记了积分限。添加积分限之后则和文献一致。如图:
∂(∫vkn(v)dd)∂v does not equal to ∫vk∂n(v)∂vdd
find . -type f | xargs -n 5 touch
4/5
2016年10月21日 08:10