【摘要】 应用具有正负号系数微分不等式解振动的判别准则，研究了具有正负号中立型非线性微分方程组解的振动性，获得了其解振动的判别准则．更多还原

【Abstract】 おn this paper,the oscillation of the solutions of the neutral nonlinear differential systems with positive and negative coefficient is discussed.The oscillation criteria for solutions of the neutral differential inequalities with positive and negative coefficient are used to obtain oscillation criteria of all solutions.更多还原