Need help with your math homework? Who ya gonna call? When mom, dad, your older sister, your best friend, and your next-door-neighbor can't help, these sites will be there for you.
Pi is the ratio of the circumference of a circle to its diameter. Regardless of the size of the circle, pi is always the same irrational number: approximately 3.14.
Purplemath's algebra lessons are written with the student in mind. These lessons emphasize the practicalities rather than the technicalities, demonstrating dependable techniques, warning of likely "trick" questions, and pointing out common mistakes.
Mathematics resources online for Year 1 - 3
William Mueller (see Wmueller.com below) describes precalculus as the bridge between the math you know, such as arithmetic and algebra, and a wondrous, fertile land ahead: calculus.
Holly Camp was a twenty-five-year-old divorced mom with two kids under the age of four when she enrolled in college.
"When one thing depends on another, as, for example, the area of a circle depends on the radius, or the temperature on the mountain depends on the height, then we say that the first is a ‘function' of the other."
MathWorld is an extensive math encyclopedia, "created, developed and nurtured by Eric Weisstein with contributions from the world's math community."
Originally designed to demonstrate how technology can be used in the calculus classroom, this University of Tennessee site has been grown to include student tutorials, practice problems, quizzes...
"Calculus is the lingua franca of mathematics, engineering, and all of the sciences. You want to speak it well, with genuine understanding..."
The union of two sets, denoted A∪B ("A union B"), is the set of all members contained in either A or B or both.
Once you understand Union and Intersection, you can create members of "VENN WORLD"