Integrating factor, first integral and λ-symmetry for vector ODEs of second orders
الموضوعات : Applied Mathematics
1 - Department of Mathematics, Brujerd Branch, Islamic Azad University, Broujerd, Iran
الکلمات المفتاحية: Symmetry, λ-symmetry, λ-prolongation, integrating factor, first integral.,
ملخص المقالة :
The goal of this paper is to calculate an integrating factor, λ-symmetry and a
first integral for ODEs of second order ¨u = F(x, u, u˙) and for a vector ODEs
of second order ¨rˆ = ˆf, by the λ-symmetry method.
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