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Bài viết của Nguyễn Mỹ Hương

Transformation of Functions

(credit: "Misko"/Flickr) We all know that a flat mirror enables us to see an accurate image of ourselves and whatever is behind us. When we tilt the mirror, the images we see may shift horizontally or vertically. But what happens when we bend a flexible ...

Tác giả: Nguyễn Mỹ Hương viết 15:59 ngày 25/05/2018 chỉnh sửa

Trade Balances in Historical and International Context

The history of the U.S. current account balance in recent decades is presented in several different ways. [link] (a) shows the current account balance and the merchandise trade balance in dollar terms. [link] (b) shows the current account balance and ...

Tác giả: Nguyễn Mỹ Hương viết 15:58 ngày 25/05/2018 chỉnh sửa

Solving Trigonometric Equations

Egyptian pyramids standing near a modern city. (credit: Oisin Mulvihill) Thales of Miletus (circa 625–547 BC) is known as the founder of geometry. The legend is that he calculated the height of the Great Pyramid of Giza in Egypt using the theory of ...

Tác giả: Nguyễn Mỹ Hương viết 15:58 ngày 25/05/2018 chỉnh sửa

Elasticity and Pricing

Studying elasticities is useful for a number of reasons, pricing being most important. Let’s explore how elasticity relates to revenue and pricing, both in the long run and short run. But first, let’s look at the elasticities of some common goods ...

Tác giả: Nguyễn Mỹ Hương viết 15:58 ngày 25/05/2018 chỉnh sửa

Introduction to Labor and Financial Markets

People often think of demand and supply in relation to goods, but labor markets, such as the nursing profession, can also apply to this analysis. (Credit: modification of work by "Fotos GOVBA"/Flickr Creative Commons) Baby Boomers Come of Age The ...

Tác giả: Nguyễn Mỹ Hương viết 15:58 ngày 25/05/2018 chỉnh sửa

The Expenditure-Output Model

(This appendix should be consulted after first reading The Aggregate Demand/Aggregate Supply Model and The Keynesian Perspective.) The fundamental ideas of Keynesian economics were developed before the AD/AS model was popularized. From the 1930s until the ...

Tác giả: Nguyễn Mỹ Hương viết 15:58 ngày 25/05/2018 chỉnh sửa

Present Discounted Value

As explained in Financial Markets, the prices of stocks and bonds depend on future events. The price of a bond depends on the future payments that the bond is expected to make, including both payments of interest and the repayment of the face value of the ...

Tác giả: Nguyễn Mỹ Hương viết 15:58 ngày 25/05/2018 chỉnh sửa

Introduction to Elasticity

Netflix On-Demand Media Netflix, Inc. is an American provider of on-demand Internet streaming media to many countries around the world, including the United States, and of flat rate DVD-by-mail in the United States. (Credit: modification of work by Traci ...

Tác giả: Nguyễn Mỹ Hương viết 15:57 ngày 25/05/2018 chỉnh sửa

Distribution Needed for Hypothesis Testing

Earlier in the course, we discussed sampling distributions. Particular distributions are associated with hypothesis testing. Perform tests of a population mean using a normal distribution or a Student's t -distribution . (Remember, use a Student's t ...

Tác giả: Nguyễn Mỹ Hương viết 15:57 ngày 25/05/2018 chỉnh sửa

Angles

A golfer swings to hit a ball over a sand trap and onto the green. An airline pilot maneuvers a plane toward a narrow runway. A dress designer creates the latest fashion. What do they all have in common? They all work with angles, and so do all of us at one ...

Tác giả: Nguyễn Mỹ Hương viết 15:57 ngày 25/05/2018 chỉnh sửa