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  2. Quadratic equation - Wikipedia

    en.wikipedia.org/wiki/Quadratic_equation

    Figure 1. Plots of quadratic function y = ax 2 + bx + c, varying each coefficient separately while the other coefficients are fixed (at values a = 1, b = 0, c = 0). A quadratic equation whose coefficients are real numbers can have either zero, one, or two distinct real-valued solutions, also called roots.

  3. Newton's method - Wikipedia

    en.wikipedia.org/wiki/Newton's_method

    An illustration of Newton's method. In numerical analysis, the Newton–Raphson method, also known simply as Newton's method, named after Isaac Newton and Joseph Raphson, is a root-finding algorithm which produces successively better approximations to the roots (or zeroes) of a real-valued function.

  4. List of Chinese national-type primary schools in Selangor

    en.wikipedia.org/wiki/List_of_Chinese_national...

    1 Kuala Selangor District: 1,941 12 162 9 3 Hulu Langat District: 21,006 17 1,236 16 1 Hulu Selangor District: 2,027 9 225 9 0 Sabak Bernam District: 2,009 10 201 3 7 Gombak District: 9,181 8 1,148 8 0 Petaling District: 38,152 23 1,659 23 0 Sepang District: 4,404 7 629 6 1 Total: 107,444: 115 934: 99 16