Functions

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Focus on algebra II functions with these free worksheets, videos, and online tools. Whether you need practice graphing a cubic function, finding the domain of an inverse function, or just working through a tough polynomial, you'll find what you need here.
Excellent site showing examples of algebra, trig, calculus, differential equations, and linear algebra.

Gives a detailed explanation of how to use interval notation, followed by numerous examples, from very simple to quite complex.

A site with step by step tutorials on how to draw and graph a variety of mathematical functions

Online graphing calculator, useful for drawing out a function to visualize it or find key points.

The perfect study site for high school, college students and adult learners. Get help to do your homework, refresh your memory, prepare for a test, ....

In this video, Salman Khan of Khan Academy explains polynomial approximation of functions. Part 3 of 7.

In this video, Salman Khan of Khan Academy explains parametric equations. Part 3 of 4.

In this video, Salman Khan of Khan Academy explains parametric equations. Part 2 of 4.

In this video, Salman Khan of Khan Academy explains parametric equations. Part 1 of 4.

In this video, Salman Khan of Khan Academy explains polynomial approximation of functions. Part 5 of 7.

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