HSC Business Studies
HSC Year 11
Business Studies
12 个知识点
HSC Year 11 Business Studies preliminary course, organised around the official topic sequence and supported by archived examination questions.
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HSC Year 11
HSC Business Studies
HSC Year 12
Business Studies
17 个知识点
HSC Year 12 Business Studies course covering operations, marketing, finance and human resources, with official and school trial examination questions.
HSC Economics
HSC Year 11
Economics
18 个知识点
HSC Year 11 Economics course covering economic foundations, markets, labour, finance and government intervention.
HSC Economics
HSC Year 12
Economics
22 个知识点
HSC Year 12 Economics course covering the global economy, Australia's external sector, economic issues and policy.
HSC Commerce
HSC Year 10
Commerce
133 个知识点
HSC Year 10 Commerce course covering consumer decisions, work, law, the economy, investing and business.
HSC Business Studies
HSC Year 11
Business Studies
12 个知识点
HSC Year 11 Business Studies preliminary course, organised around the official topic sequence and supported by archived examination questions.
HSC Business Studies
HSC Year 12
Business Studies
17 个知识点
HSC Year 12 Business Studies course covering operations, marketing, finance and human resources, with official and school trial examination questions.
HSC Economics
HSC Year 11
Economics
18 个知识点
HSC Year 11 Economics course covering economic foundations, markets, labour, finance and government intervention.
HSC Economics
HSC Year 12
Economics
22 个知识点
HSC Year 12 Economics course covering the global economy, Australia's external sector, economic issues and policy.
HSC Commerce
HSC Year 10
Commerce
133 个知识点
HSC Year 10 Commerce course covering consumer decisions, work, law, the economy, investing and business.
HSC Biology
HSC Year 11
Biology
47 个知识点
HSC Year 11 Biology course covering cell biology, organism function, evolution and ecosystem dynamics.
IB Biology
IB Biology (Years 11–12)
461 个知识点
IB Biology HL knowledge points and question bank
IB Business Management
IB Business Management (Years 11–12)
37 个知识点
IB Business Management course covering business foundations, people, finance, marketing and operations.
IB Economics
IB Economics (Years 11–12)
93 个知识点
IB Economics course covering microeconomics, macroeconomics, the global economy and development economics.
先把知识点讲清楚，再去练
课程 Hub 把知识点、练习、错题和讨论收在一处；学习计划把范围排进日历，每天只剩今天该做的事。
IB 数学 AA/函数与方程 知识点
二次函数的判别式
- Δ = b² − 4ac，它决定方程有几个实根。
- Δ > 0 有两个不同实根；Δ = 0 有一个重根；Δ < 0 没有实根。
- 同一个 Δ 也决定抛物线与 x 轴的交点个数。
配套练习 6 题 约 12 分钟 开始练习
学习计划 今天
今天 · 3 项
复习：二次函数的判别式 15 分钟
练习：函数与方程 8 题 20 分钟
错题重练：动量守恒 25 分钟
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