Danh sách bài viết của Lê Thị Khánh Huyền

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Bài viết của Lê Thị Khánh Huyền

The Economics of Pollution

From 1970 to 2012, the U.S. population increased by one-third and the size of the U.S. economy more than doubled. Since the 1970s, however, the United States, using a variety of anti-pollution policies, has made genuine progress against a number of pollutants. ...

Tác giả: Lê Thị Khánh Huyền viết 16:04 ngày 25/05/2018 chỉnh sửa

International Environmental Issues

Many countries around the world have become more aware of the benefits of environmental protection. Yet even if most nations individually took steps to address their environmental issues, no nation acting alone can solve certain environmental problems which ...

Tác giả: Lê Thị Khánh Huyền viết 16:04 ngày 25/05/2018 chỉnh sửa

Appendix C: Data Sets

The following tables provide lap times from Terri Vogel's log book. Times are recorded in seconds for 2.5-mile laps completed in a series of races and practice runs. Race Lap Times (in seconds) Lap 1 Lap 2 ...

Tác giả: Lê Thị Khánh Huyền viết 16:03 ngày 25/05/2018 chỉnh sửa

Polar Cases of Elasticity and Constant Elasticity

There are two extreme cases of elasticity: when elasticity equals zero and when it is infinite. A third case is that of constant unitary elasticity. We will describe each case. Infinite elasticity or perfect elasticity refers to the extreme case where ...

Tác giả: Lê Thị Khánh Huyền viết 16:03 ngày 25/05/2018 chỉnh sửa

Solving Systems with Inverses

Nancy plans to invest $10,500 into two different bonds to spread out her risk. The first bond has an annual return of 10%, and the second bond has an annual return of 6%. In order to receive an 8.5% return from the two bonds, how much should Nancy invest in ...

Tác giả: Lê Thị Khánh Huyền viết 16:02 ngày 25/05/2018 chỉnh sửa

How Government Borrowing Affects Private Saving

A change in government budgets may impact private saving. Imagine that people watch government budgets and adjust their savings accordingly. For example, whenever the government runs a budget deficit, people might reason: “Well, a higher budget deficit ...

Tác giả: Lê Thị Khánh Huyền viết 16:02 ngày 25/05/2018 chỉnh sửa

Automatic Stabilizers

The millions of unemployed in 2008–2009 could collect unemployment insurance benefits to replace some of their salaries. Federal fiscal policies include discretionary fiscal policy , when the government passes a new law that explicitly changes tax or ...

Tác giả: Lê Thị Khánh Huyền viết 16:02 ngày 25/05/2018 chỉnh sửa

Conic Sections in Polar Coordinates

Planets orbiting the sun follow elliptical paths. (credit: NASA Blueshift, Flickr) Most of us are familiar with orbital motion, such as the motion of a planet around the sun or an electron around an atomic nucleus. Within the planetary system, ...

Tác giả: Lê Thị Khánh Huyền viết 16:02 ngày 25/05/2018 chỉnh sửa

The Use of Mathematics in Principles of Economics

(This appendix should be consulted after first reading Welcome to Economics!) Economics is not math. There is no important concept in this course that cannot be explained without mathematics. That said, math is a tool that can be used to illustrate ...

Tác giả: Lê Thị Khánh Huyền viết 16:02 ngày 25/05/2018 chỉnh sửa

Logarithmic Functions

Devastation of March 11, 2011 earthquake in Honshu, Japan. (credit: Daniel Pierce) In 2010, a major earthquake struck Haiti, destroying or damaging over 285,000 homes http://earthquake.usgs.gov/earthquakes/eqinthenews/2010/us2010rja6/#summary. Accessed ...

Tác giả: Lê Thị Khánh Huyền viết 16:02 ngày 25/05/2018 chỉnh sửa

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The Economics of Pollution

International Environmental Issues

Appendix C: Data Sets

Polar Cases of Elasticity and Constant Elasticity

Solving Systems with Inverses

How Government Borrowing Affects Private Saving

Automatic Stabilizers

Conic Sections in Polar Coordinates

The Use of Mathematics in Principles of Economics

Logarithmic Functions

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