Изменения

|statement=<tex dpi=150>\frac{d\partial^n(x^a)}{dx\partial x^n} = (a)_n\,\, x^{a-n}</tex>

<tex dpi=150>\frac{d\partial^n(x^a)}{dx\partial x^n} =a\times\frac{d\partial^{n-1}(x^{a-1})}{dx\partial x^{n-1}}=a(a-1)\times\frac{d\partial^{n-2}(x^{a-2})}{dx\partial x^{n-2}}</tex>:<tex dpi=150>=a(a-1)\cdots (a-n+1)\times\frac{d\partial^{n-n}(x^{a-n})}{dx\partial x^{n-n}}=(a)_n\,\, x^{a-n}</tex>