The solution
where
is the Riemann function of the linear Goursat
problem with characteristics
according to the Riemann
method.
The solution
where
is the Riemann function of the linear Goursat
problem with characteristics
according to the Riemann
method.
Weisstein, Eric W. "Riemann Formula." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/RiemannFormula.html