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THE OPEN TEXTBOOK SHELF
A textbook for what’s next.
Find a book for your course. Read a section, listen alongside the original, and return to where you left off.
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2588 chapter matches · Matches reviewed table-of-contents titles.
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Section 4.1 Exercises
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Section 4.2 Graphs of Exponential Functions
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Section 4.2 Exercises
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Section 4.3 Logarithmic Functions
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Section 4.3 Exercises
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Section 4.4 Logarithmic Properties
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Section 4.4 Exercises
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Section 4.5 Graphs of Logarithmic Functions
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Section 4.5 Exercises
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Section 4.6 Exponential and Logarithmic Models
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Section 4.6 Exercises
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Section 4.7 Fitting Exponential Models to Data
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Section 4.7 Exercises
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Chapter 5: Trigonometric Functions of Angles
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Section 5.1 Circles
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Section 5.1 Exercises
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Section 5.2 Angles
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Section 5.2 Exercises
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Section 5.3 Points on Circles Using Sine and Cosine
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Section 5.3 Exercises
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Section 5.4 The Other Trigonometric Functions
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Section 5.4 Exercises
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Section 5.5 Right Triangle Trigonometry
Selected for your next chapter
Junior extension: words and numbers
15 selected units on vocabulary, word formation, arithmetic and percentages. Intended for confident English readers with teacher or dictionary support. These selections do not reclassify the full books as junior textbooks.
Explore this collectionQuestions in philosophy
Explore arguments, knowledge, ethics, mind, religion and aesthetics through six introductory philosophy books. Start with a topic that interests you; listening is available only where the chapter shows a listening option.
Explore this collectionMathematics and computing
A route from arithmetic and everyday mathematics to functions, statistics, algorithms and open source collaboration. Check each book's prerequisites; the algorithms text assumes programming experience.
Explore this collectionFive ways in
Find a question worth following.
Thoughtful reading paths, open books, and ideas you can explore for yourself.
01 / A place to begin
A new way into mathematics.
Start where you are. Follow a question. Find the book that makes the next idea click.
02 / Think in code
Small steps. Powerful ideas.
A first program, a clever search, a useful question about data. Make the invisible steps visible.
03 / The examined idea
Stay with a good question.
What counts as knowledge? What makes an argument hold? Open a book that leaves room to think.
04 / The small reading escape
A little time. A whole world.
A poem, a fable, a story with a turn you did not see coming. Read something complete.
05 / Read together tonight
One story. A shared moment.
Find a small adventure, follow the pictures, and leave a little room for conversation.