Description
Principles of Microeconomics, 9th edition
Principles of Microeconomics, 9th edition is an introductory economics textbook written by N. Gregory Mankiw. It builds on his Ten Principles of Economics as a foundation before working into more complex theory. The book explains how individuals and firms make decisions, how they interact in specific markets, and how government policy affects those interactions.
Mankiw writes in a conversational style meant to keep beginners from getting lost in jargon. Real-world examples and updated case studies run through the chapters, and the book covers market structures from perfect competition to monopolies.
Core concepts in supply and demand
Chapters work through supply and demand, price elasticity, market efficiency and consumer choice, the concepts a first course in microeconomics builds on.
Government policy and market intervention
The book looks at the effect of government interventions such as taxes, price controls and environmental regulations, and covers externalities as part of that policy discussion.
In the News boxes and digital tools
In the News boxes and updated case studies connect the theory to current events. The text works with Cengage’s MindTap platform for interactive learning, graphing practice and adaptive test prep.
Book details
- Title: Principles of Microeconomics
- Author: N. Gregory Mankiw
- Edition: 9th
- Publisher: Cengage
- ISBN-13: 9780357133484
Questions buyers ask
Who is this textbook for?
Students taking an introductory microeconomics course.
What is the Ten Principles of Economics approach?
Mankiw builds the book around ten foundational principles before moving into more complex theory.
Does it cover government policy?
Yes, including taxes, price controls, environmental regulations and externalities.
Does it work with MindTap?
Yes. It is built to work with Cengage’s MindTap platform for interactive learning and test prep.
What core topics does it cover?
Supply and demand, price elasticity, market efficiency, consumer choice and market structures from perfect competition to monopolies.







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