This study aims to analyze the symbol sense ability of students by investigating strategies used to solve algebraic equations that consist of linear, quadratic, and rational equations. A qualitative descriptive method was conducted. The instrument included a test with one linear ...
另:[Wu2011]:Understanding Numbers in Elementary School Mathematics,有中译本《数学家讲解小学数学》,2016,北京大学出版社。[Wu2016a]:Teaching School Mathematics: Pre-Algebra[Wu2016b]:Teaching School Mathematics: Algebra[Wu2020a]:Rational Numbers to Linear Equations[Wu2020b]:Algebra and Geometry[Wu2020c...
A new numerical method called linearized and rational approximation method is presented to solve non-linear evolution equations. The utility of the method is demonstrated for the case of differentiation of functions involving steep gradients. The solution of Burgers' equation is presented to illustrate ...
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solve quadraticequationsbythe factor method, students are asked to solve quadraticequationswithirrational roots; and it is anticipated that they will discover that not all quadratic expressions can be factorisedintolinearexpressions with rational coefficients ...
我印象里是我母亲常对我说负负得正,潜意识里就将它视为正确的了,就像幼儿园时拿计算器算出1/3=0.333···,殊不知要先有这一事实才能有计算器,而不能用计算器验证这一事实。P138,D(a)∩D(d)=1,应为gcd(a,d)=1.Chapter 3 对所讨论的数的规定(自然数or整数)稍嫌混乱。
This paper contains a solution and an estimation method for linear rational-expectations models with lagged expectations. The solution method is a synthetic approach, combining state-space and infinite-MA representations with a simple system of linear equations. The advantage lies in the particular comb...
Set of simple mathematical classes in C# (Vectors, Matrixes, Polynoms, Systems of linear equations, Integrals methods, Complex numbers, Rational numbers, Graphs, Methods for solving differential equations) + some features such as memoize (function values memorising) ...
In this paper, we show that the maximum principle holds for quasilinear elliptic equations with quadratic growth under general structure conditions.Two typ... G Barles,Franois Murat - 《Archive for Rational Mechanics & Analysis》 被引量: 133发表: 1995年 ...