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Bài viết của Trần Bảo Ngọc

How the Foreign Exchange Market Works

Most countries have different currencies, but not all. Sometimes small economies use the currency of an economically larger neighbor. For example, Ecuador, El Salvador, and Panama have decided to dollarize —that is, to use the U.S. dollar as their currency. ...

Tác giả: Trần Bảo Ngọc viết 15:52 ngày 25/05/2018 chỉnh sửa

Right Triangle Trigonometry

We have previously defined the sine and cosine of an angle in terms of the coordinates of a point on the unit circle intersected by the terminal side of the angle: cos t=x sin t=y In this section, we will see ...

Tác giả: Trần Bảo Ngọc viết 15:52 ngày 25/05/2018 chỉnh sửa

Intra-industry Trade between Similar Economies

Absolute and comparative advantages explain a great deal about patterns of global trade. For example, they help to explain the patterns noted at the start of this chapter, like why you may be eating fresh fruit from Chile or Mexico, or why lower productivity ...

Tác giả: Trần Bảo Ngọc viết 15:52 ngày 25/05/2018 chỉnh sửa

Introduction to Macroeconomic Policy around the World

Looking for Work Job fairs and job centers are often available to help match people to jobs. This fair took place in the U.S. (Hawaii), a high-income country with policies to keep unemployment levels in check. Unemployment is an issue that has different ...

Tác giả: Trần Bảo Ngọc viết 15:52 ngày 25/05/2018 chỉnh sửa

Binomial Theorem

A polynomial with two terms is called a binomial. We have already learned to multiply binomials and to raise binomials to powers, but raising a binomial to a high power can be tedious and time-consuming. In this section, we will discuss a shortcut that will ...

Tác giả: Trần Bảo Ngọc viết 15:51 ngày 25/05/2018 chỉnh sửa

Introduction to Inflation

Big Bucks in Zimbabwe This bill was worth 100 billion Zimbabwean dollars when issued in 2008. There were even bills issued with a face value of 100 trillion Zimbabwean dollars. The bills had $100,000,000,000,000 written on them. Unfortunately, they ...

Tác giả: Trần Bảo Ngọc viết 15:51 ngày 25/05/2018 chỉnh sửa

Practical Problems with Discretionary Fiscal Policy

In the early 1960s, many leading economists believed that the problem of the business cycle, and the swings between cyclical unemployment and inflation, were a thing of the past. On the cover of its December 31, 1965, issue, Time magazine, then the premier ...

Tác giả: Trần Bảo Ngọc viết 15:50 ngày 25/05/2018 chỉnh sửa

Pitfalls for Monetary Policy

In the real world, effective monetary policy faces a number of significant hurdles. Monetary policy affects the economy only after a time lag that is typically long and of variable length. Remember, monetary policy involves a chain of events: the central bank ...

Tác giả: Trần Bảo Ngọc viết 15:50 ngày 25/05/2018 chỉnh sửa

Unit Circle: Sine and Cosine Functions

The Singapore Flyer is the world’s tallest Ferris wheel. (credit: “Vibin JK”/Flickr) Looking for a thrill? Then consider a ride on the Singapore Flyer, the world’s tallest Ferris wheel. Located in Singapore, the Ferris ...

Tác giả: Trần Bảo Ngọc viết 15:49 ngày 25/05/2018 chỉnh sửa

Building a Model of Aggregate Demand and Aggregate Supply

To build a useful macroeconomic model, we need a model that shows what determines total supply or total demand for the economy, and how total demand and total supply interact at the macroeconomic level. This model is called the aggregate demand/aggregate ...

Tác giả: Trần Bảo Ngọc viết 15:49 ngày 25/05/2018 chỉnh sửa