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  2. Exercise (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Exercise_(mathematics)

    Later most exercises involve at least two digits. A common exercise in elementary algebra calls for factorization of polynomials. Another exercise is completing the square in a quadratic polynomial. An artificially produced word problem is a genre of exercise intended to keep mathematics relevant. Stephen Leacock described this type: [1]

  3. Maxwell's equations - Wikipedia

    en.wikipedia.org/wiki/Maxwell's_equations

    In the differential form formulation on arbitrary space times, F = ⁠ 1 / 2 ⁠ F αβ ‍ dx α ∧ dx β is the electromagnetic tensor considered as a 2-form, A = A α dx α is the potential 1-form, = is the current 3-form, d is the exterior derivative, and is the Hodge star on forms defined (up to its orientation, i.e. its sign) by the ...

  4. Fresnel equations - Wikipedia

    en.wikipedia.org/wiki/Fresnel_equations

    For common glass (n 2 ≈ 1.5) surrounded by air (n 1 = 1), the power reflectance at normal incidence can be seen to be about 4%, or 8% accounting for both sides of a glass pane. Brewster's angle [ edit ]

  5. Mathematical analysis - Wikipedia

    en.wikipedia.org/wiki/Mathematical_analysis

    Numerical analysis is the study of algorithms that use numerical approximation (as opposed to general symbolic manipulations) for the problems of mathematical analysis (as distinguished from discrete mathematics). [25] Modern numerical analysis does not seek exact answers, because exact answers are often impossible to obtain in practice.

  6. 35 Stories From People Who Probably Had A Worst Christmas ...

    www.aol.com/51-people-share-worst-christmases...

    Image credits: borez #2. 2008: I came down with swine flu and had to wear a surgical mask. My deadbeat dad went to jail. And on Christmas morning I found my beloved pet parakeet dead on the bottom ...

  7. The 50 men accused in mass rape of Gisèle Pelicot - AOL

    www.aol.com/50-men-accused-mass-rape-072159807.html

    Families scrambling for answers. Since September, the 50 men have appeared, one after the other, in front of the court in Avignon. Usually in rape cases character investigations can take several days.

  8. 'Embarrassing': The Lakers have lost their last 2 games by a ...

    www.aol.com/embarrassing-lakers-lost-last-2...

    Add it up, and it's the worst two-game stretch in Los Angeles Lakers history. The Lakers lost to the Heat 134-93 on Wednesday, that loss coming two days after a 109-80 loss to the Timberwolves.

  9. Equation solving - Wikipedia

    en.wikipedia.org/wiki/Equation_solving

    Instantiating a symbolic solution with specific numbers gives a numerical solution; for example, a = 0 gives (x, y) = (1, 0) (that is, x = 1, y = 0), and a = 1 gives (x, y) = (2, 1). The distinction between known variables and unknown variables is generally made in the statement of the problem, by phrases such as "an equation in x and y ", or ...