• 2022-07-23
    以[img=214x27]18031bad00a5aa2.png[/img] 为通解的二阶线性微分方程是
    A: [img=144x26]18031bad08d0f9a.png[/img]
    B: [img=136x26]18031bad1267e39.png[/img]
    C: [img=128x26]18031bad1a8b5a5.png[/img]
    D: [img=136x26]18031bad24caf8e.png[/img]