\[y = C_{1}e^{\text{ωx}} + C_{2}e^{- \omega x};\text{\ \ \ }\]
\[y^{''} - \omega^{2}y = 0.\]
\[1)\ y^{'} = C_{1} \bullet \omega e^{\text{ωx}} - C_{2} \bullet \omega e^{- \omega x};\]
\[y^{''} = C_{1} \bullet \omega^{2}e^{\text{ωx}} + C_{2}\omega^{2}e^{- \omega x}.\]
\[2)\ Проверим:\]