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Created by Harvard students for students everywhere, these study companions and reference tools cover a wide range of college and graduate school subjects, from Business and Computer Programming to Medicine, Law, and Languages. They'll give you what it takes to find success in school and beyond. Outlines and summaries cover key points, while diagrams and tables make difficult concepts easier to grasp.

This four-page chart reviews:

• Definition of a function
• Exponential and logarithmic functions
• Changing a function
• Polynomial functions
• Rational functions
• Polar coordinates
• Complex numbers
• Trigonometric functions