TY - JOUR ID - TI - Lie Symmetries to Ordinary Differential Equations (ODEs) AU - Samar kadhum Al-Nassar PY - 2015 VL - 5 IS - 1 SP - 1 EP - 18 JO - Journal of Education for Pure Science مجلة التربية للعلوم الصرفة SN - 20736592 AB - AbstractIn this paper, we have provided some examples motivating the use of Liesymmehies. Also, we have discussed the properties of one- parameter groups oftransformations (Lie groups) and introduced the ideas of invariants of the group oft t"*forro"tio*.In the case of ordinary differential equations use of Lie qmmetriesresulted in a separable ODE when the goveming DE was first order and a reduction oforder when the goveming DE was of order greater tlan one.

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