A2經濟超高頻essay考題：utility & indifference curve（上）

經濟更換了考綱之后，utility和indifference curve最近兩年在Paper 4連續出現了12次！按理說，這么高頻的考題，一定是有很多知識點的。然而這就是cie經濟考試神奇的地方，我們翻看對應syllabus的時候，只有短短四行！

粗看syllabus，大家可能覺得這些知識點非常簡單，不就是MU隨著消費的變多而降低，MUA/PA =MUB/PB，消費者會在indifference curve和budget line相切的地方消費嘛。

然而一看題目，這考的都是啥？utility里為啥還要討論廣告對消費者的影響？indifference curve還能推導demand curve？價格改變不同goods的income effect和substitution effect到底怎么處理？

別擔心！在翻遍了過去六十多張past papers，反復研究所有的report之后，CIE經濟98分，牛津畢業的朱老師幫大家整理好了所有必須掌握的知識點，并做成了視頻帶給大家！

今天首先為大家帶來的是utility，下期我們會講解indifference curve。朱老師覺得，這種每年都出的考題，不會實在是太可惜了！

知識點

utility, law of diminishing marginal utility

Equi-marginal principle

Derivation of individual demand curve

Limitations and assumptions of utility theory

Influence of advertising and income

Bounded rationality and Heuristics

那老師！知識點我都學會了，但我考試不會寫題，怎么辦？這就是我們的核心競爭力啦！大家可能可以找到一些網上的經濟資料或者revision guide，但是提供cie sample essay的僅我們一家！視頻的后半部分朱老師為大家帶來最有代表性的考題的sample essay供大家參考，如果知識點實在難以理解，背出sample essay也是一個很好的選擇！

Sample EssayQ1 Explain how utility theory can be used to determine the downward slope of ademand curve. [12]

Q2 Analyse what is meant by the equi-marginal principle of consumer demand and?whether it can be linked to the derivation of a market demand curve. [13]

Q3 Economic analysis adequately explains how a rational consumer determines a

pattern of consumption from a given income in a perfect market with no advertising. It?does not explain the more common case of what happens if income changes or if there is?advertising. The theory is, therefore, of little merit.

Do you agree with these assertions? [25]

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