Chapter 2

Relations and Functions

Read the ideas in context, then work through short guided lessons that meet you at your current level.

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Sections

Work through it section by section

Open any section. You read the idea first, then answer questions on it — and you can start wherever you like.

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1. Relation or function: the one testRead

2. Ordered pairs, and the set of all of them2 ideasRead

3. A relation is a chosen set of pairs2 ideasRead

4. Applying the test — on pairs, then on graphs2 ideasRead

5. Domain, codomain, rangeRead

6. The standard functions7 ideasRead

7. Building new functions from old2 ideasRead

8. One test, every ideaRead

9. Two traps this chapter sets2 ideasRead

10. Practice set4 ideasRead

11. Chapter-end problemsRead

12. JEE-application problemsRead