Modified Helmholtz equation
= Modified Helmholtz equation
{title2=$(\Delta-m^2)u=0$}
The modified Helmholtz equation is
$$
\Delta u-m^2u=0.
$$
It reduces to the <Laplace equation> when $m=0$.
= Modified Helmholtz equation
{title2=$(\Delta-m^2)u=0$}
The modified Helmholtz equation is
$$
\Delta u-m^2u=0.
$$
It reduces to the <Laplace equation> when $m=0$.