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  2. Production–possibility frontier - Wikipedia

    en.wikipedia.org/wiki/Production–possibility...

    In microeconomics, a production–possibility frontier (PPF), production possibility curve (PPC), or production possibility boundary (PPB) is a graphical representation showing all the possible options of output for two that can be produced using all factors of production, where the given resources are fully and efficiently utilized per unit time.

  3. Guns versus butter model - Wikipedia

    en.wikipedia.org/wiki/Guns_versus_butter_model

    The production possibilities frontier (PPF) for guns versus butter. Points like X that are outside the PPF are impossible to achieve. Points such as B, C, and D illustrate the trade-off between guns and butter: at these levels of production, producing more of one requires producing less of the other.

  4. Track geometry - Wikipedia

    en.wikipedia.org/wiki/Track_geometry

    The third type is reverse curve which comprises two or more simple curves that has the opposite direction of curvature (sometime known as "S" curve or serpentine curve). [ 3 ] [ 4 ] In Australia, there is a special definition for a bend (or a horizontal bend ) which is a connection between two tangent tracks at almost 180 degrees (with ...

  5. Heckscher–Ohlin theorem - Wikipedia

    en.wikipedia.org/wiki/Heckscher–Ohlin_theorem

    Basic situation: Two identical countries (A and B) have different initial factor endowments. Autarky equilibrium (,): no trade, individual production equals consumption.. Trade equilibrium: both countries consume the same (=), especially beyond their own Production–possibility frontier; production and consumption points are diverge

  6. Curve - Wikipedia

    en.wikipedia.org/wiki/Curve

    A parabola, one of the simplest curves, after (straight) lines. In mathematics, a curve (also called a curved line in older texts) is an object similar to a line, but that does not have to be straight. Intuitively, a curve may be thought of as the trace left by a moving point.

  7. What Happened to Curved TVs? Here’s Why They ... - AOL

    www.aol.com/news/happened-curved-tvs-why...

    Buy: Samsung Electronics UN65MU8500 Curved 65-Inch 4K Ultra HD Smart LED TV (2017 Model) $1,745.00. Samsung UN55RU7300FXZA Curved 55-Inch Smart TV (2019 Model)

  8. 30 things to do when you’re bored (that are actually good for ...

    www.aol.com/lifestyle/30-things-bored-actually...

    What’s your favorite screen-free thing to do when you’re bored? Share your tried-and-true anti-boredom tips in the comments below.

  9. Hyperbolic geometry - Wikipedia

    en.wikipedia.org/wiki/Hyperbolic_geometry

    Lines through a given point P and asymptotic to line R. Non-intersecting lines in hyperbolic geometry also have properties that differ from non-intersecting lines in Euclidean geometry: For any line R and any point P which does not lie on R, in the plane containing line R and point P there are at least two distinct lines through P that do not ...