Question

Find the nth derivative log(x^2+a^2)

Answer 1

y=log(x^2+a^2)
y1=(1/x^2+a^2) (2a)
x^2(y1)+a^2(y1)=2a
apply lebnitz theorem
$\binom{n}{0} (y |n + 1| ) {x}^{2} + \binom{n}{1} (y |n + 2| )(2x) + \binom{n}{2} (y |n + 3| )(2) + {a}^{2} (y |n + 1 | ) = 0$
here...