Show-that-r-n-nr-n-2-r-

Question Number 159716 by mathocean1 last updated on 20/Nov/21

S h o w t h a t ▽ r^{n} = {n r}^{n - 2} r

Answered by puissant last updated on 20/Nov/21

▽ r^{n} = {n r}^{n - 1} = {n r}^{n - 2} \times r

Commented by mathocean1 last updated on 23/Nov/21

thanks.