The antiderivatives are:
- For \( f(x) \): \( \frac{1}{10} e^{10x} \)
- For \( g(x) \): \( -\frac{1}{5} e^{-5x} \)
- For \( h(x) \): \( 12 e^{\frac{x}{12}} \)
Thus, the final answers are:
\[
\boxed{\frac{1}{10} e^{10x}}, \quad \boxed{-\frac{1}{5} e^{-5x}}, \quad \boxed{12 e^{\frac{x}{12}}}
\]