• 2022-06-03
    试写出偏微分方程 [tex=8.0x2.643]y1GD/EklRURhLjL3srHLMaFJ3DtmMMYI7XpWmPX0AAPjCgkPXZASXq5FA54w1QhjWlNA+IsTxJVTHKpedV5BmB295OuYvzJjTnCu1IOTYO3f5sEGbfLXSfnMgiSRnQE+EVsZdoWQArmglNLp2YVb8A==[/tex] 的特征方程, 并求其通解