てすと

\[
X=(T-T_c)^\beta
\]\[
dX = \beta(T-T_c)^{\beta-1}dT
\]

\[
\pdv{X}{T}
\]

トリップ

\[
\frak{1}{X}\pdv{X}{T}
=
\frak{\beta}{T-T_c}
\]