4.1 Number and Algebra 數與代數

Quadratic equations in one unknown 一元二次方程

• gMath: 二次方程及二次函數 | Quadratic Equations & Quadratic Functions

• gMath: 複數

Functions and graphs 函數及其圖像

• gMath: 函數簡介 | Introduction to Functions

• Analyze the Graph of a Function

• Is y a function of x?

• gMath: 二次方程及二次函數 | Quadratic Equations & Quadratic Functions

• Graph of y = ax²

• Compare Quadratic Graphs

• Parabolas

Exponential and logarithmic functions 指數函數與對數函數

• gMath: 指數和對數函數 | Exponential & Logarithmic Functions

• Graphing Exponential Functions

• Graphs of y=a^x and y=(1/a)^x

• Graphing y=log(a, x) from y=a^x

• Graphs of y=a^x and y=log(a, x)

• Exponential Equation

More about polynomials 續多項式

• gMath: 續多項式 | More about Polynomials

Variations 變分

• gMath: 變分 | Variations

Arithmetic and geometric sequences and their summations 等差數列與等比數列及其求和法

• gMath: 等差及等比數列 | Arithmetic & Geometric Sequences

• Triangle Numbers 三角形數

• Sum of First n Odd Numbers 首n個奇數之和

Inequalities and linear programming 不等式與線性規畫

• gMath: 二元一次不等式 | Linear Inequalities in Two Unknowns

• Linear Programming

More about graphs of functions 續函數圖像

• gMath: 函數圖像的變換 | Function Transformations