1) initial integral
初积分
1.
Byusing the method of undetermined coeffcients to obtain the initial integral, we can solve the differential equations directly.
它避开了学生还未学到的λ矩阵、特征向量的较深知识，直接用待定系数法求初积分解微分方程组。
2) elementary interal
初等积分
1.
A method of calculating symmetric plane static electric field with elementary interal and simple plural function was given in this paper.
提出了一种仅利用初等积分和简单复变函数运算，求解具有一定对称性的平面静电场的方法。
4) elementary integral method
初等积分法
1.
Its general solution can be found through the elementary integral method,from which the general solution formulas are derived.
论述了一类三阶变系数线性常微分方程y+A(x)y″+B(x)y′+D(x)y=E(x)当满足条件D2+DB′-BD′=0和BD+DA′-AD′=0时,可用初等积分法求其通解,并推出了求解公式。
2.
This paper uses the elementary integral method,obtained a special Riccati Equation y′=f(x)y2+g(x)y+h(x) solution,to be the f(x)=Aexp[-∫g(x)dx],h(x)=Bexp[∫g(x)dx],(1)When AB=m2,y=mAtan(mx+C)e∫g(x)dx(2)When AB=-m2,y=m1+Ce2mxA1-Ce2mxe∫g(x)dx
本文用初等积分法,求出了一类特殊的Riccati方程y′=f(x)y2+g(x)y+h(x),若f(x)=Aexp[-∫g(x)dx],h(x)=Bexp[∫g(x)dx]通解的解析表达式。
5) elementary calculus
初等微积分
1.
This paper presents the elementary calculus treatment features in Taiwan senior high school mathematics textbooks and comes up with some concrete suggestions when we add or delete the content in high school mathematics teaching.
本文介绍了台湾高中数学教材中对初等微积分内容的处理特点 ,提出了在增删中学数学教学内容时具体处理的几点建
6) preliminary calculus
微积分初步
补充资料：鞍山钢铁(集团)公司第二初轧厂1150初轧机轧制钢锭
鞍山钢铁(集团)公司第二初轧厂1150初轧机轧制钢锭
鞍山钢铁(集团)公司第二初轧厂1150初轧机轧制钢锭
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条