Kurs obyknovennykh different︠s︡ialʹnykh uravneniĭ. Different︠s︡ialʹnye uravnenii︠a︡ n-go pori︠a︡dka. Sistemy different︠s︡ialʹnykh uravneniĭ. Teoremy o edinstvennosti i sushchestvovanii resheniĭ. Metody resheniĭ
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