- #1
Baharx
- 10
- 0
i found a formula but I'm not sure is and maybe this is exist i don't know.
we know it F(x)= f(x).g(x) → F'(x)= f'(x).g(x)+g'(x).f(x)
and i want to calculate nth order.
n>1
fn(x).g(x)+ [itex]\sum^{n}_{k=1}[/itex] binomial coefficient
[itex]\left(n k\right)[/itex]. f(n-k)(x).gk(x)+ gn.f(x)
is it true? and i found myself but I'm sure this formula is exist.:uhh:
we know it F(x)= f(x).g(x) → F'(x)= f'(x).g(x)+g'(x).f(x)
and i want to calculate nth order.
n>1
fn(x).g(x)+ [itex]\sum^{n}_{k=1}[/itex] binomial coefficient
[itex]\left(n k\right)[/itex]. f(n-k)(x).gk(x)+ gn.f(x)
is it true? and i found myself but I'm sure this formula is exist.:uhh: