Solution
= Solution
Infinity is irregular singular when at least one of
$$
2-zp(z),
\qquad
z^2q(z)
$$
fails to be holomorphic as a function of $1/z$ at $1/z=0$.
= Solution
Infinity is irregular singular when at least one of
$$
2-zp(z),
\qquad
z^2q(z)
$$
fails to be holomorphic as a function of $1/z$ at $1/z=0$.