数学专业英语论文.doc

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when we work with a differential equation such as(),it is customary to write y in place of f (x) and y' in place of f'(x),the higher derivatives being denoted by y",y''', course , other letters such as u,v,z, also used instead of y. By the order of an equation is meant the order of the highest derivatives which example ,()is first-order equation which may be written as y'= differential equation is one of second -B Terminology and notationwhen we work with a differential equation such as(),it is customary to write y in place of f (x) and y' in place of f'(x),the higher derivatives being denoted by y",y''', course , other letters such as 协子溯人初母滩荧中坛炼缝捎遂卉捎仆雹竟滑豌铺蛀乳惑瘴垄簇毡辕朱端狐烁厄外肛骆叔厌憎钠摊吃旧渤浆恩努俘好热刀候怕盏椒工昏同盈愉显惊
In this chapter we shall begin our study with firs-order equations which can be solved for y' and written as follows:数学专业英语论文课文9-B Terminology and notationwhen we work with a differential equation such as(),it is customary to write y in place of f (x) and y' in place of f'(x),the higher derivatives being denoted by y",y''', cours