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Newton's Method
Come to this site to discover how the formula for finding the (n+1) approximation for the root using the equations of tangent lines (Newton's Method). The site also explains when Newton's Method fails.
Mathematics Archives
Math Archives: Visual Calculus: Newton's Method
This site offers a tutorial on Newton's Method. Be sure to check the discussion link. The site offers the formula for finding the successive approximations of a root.
University of Minnesota
University of Minnesota: Newton's Method (Applet)
This site from the University of Minnesota explains the concept of Newton's Method and offers the formula for finding the next approximation of the root from a first guess. The site has an interactive applet showing the second and third...
Wolfram Research
Wolfram Math World: Newton's Method
This site explores Newton's method and its uses as well as providing examples for the student. Formulas and links to related sites are included.