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  2. Japanese yen - Wikipedia

    en.wikipedia.org/wiki/Japanese_yen

    During the first half of 1946, the rate fluctuated to 66 yen to the USD and eventually plummeting to 600 yen to the dollar by 1947 because of the failure of the economic remedies. Eventually, the peg was officially moved to 270 yen to the dollar in 1948 before being adjusted again from 1949 to 1971 to 360 yen to the dollar.

  3. Exchange rate history of the Indian rupee - Wikipedia

    en.wikipedia.org/wiki/Exchange_rate_history_of...

    The data on exchange rate for Japanese Yen is in per 100 Yen. The end year rate for 1998–99 pertain to March 26, 1999 of Deutsche Mark rate. Data from 1971 to 1991–92 are based on official exchange rates. Data from 1992 to 1993 onward are based on FEDAI (Foreign Exchange Dealers' Association of India) indicative rates.

  4. Reserve currency - Wikipedia

    en.wikipedia.org/wiki/Reserve_currency

    A reserve currency is a foreign currency that is held in significant quantities by central banks or other monetary authorities as part of their foreign exchange reserves. [citation needed] The reserve currency can be used in international transactions, international investments and all aspects of the global economy.

  5. Equation solving - Wikipedia

    en.wikipedia.org/wiki/Equation_solving

    An example of using Newton–Raphson method to solve numerically the equation f(x) = 0. In mathematics, to solve an equation is to find its solutions, which are the values (numbers, functions, sets, etc.) that fulfill the condition stated by the equation, consisting generally of two expressions related by an equals sign.

  6. List of most expensive cars sold at auction - Wikipedia

    en.wikipedia.org/wiki/List_of_most_expensive...

    During the height of the Japanese asset price bubble in the late 1980s, when the yen had strengthened from an exchange rate of about 300 yen per one U.S. dollar in 1985 to about 150 yen per U.S. dollar in 1989, wealthy Japanese buyers began to buy classic cars for effectively half the previous cost in yen. One example of this occurred in 1989 ...

  7. Foreign exchange market - Wikipedia

    en.wikipedia.org/wiki/Foreign_exchange_market

    The foreign exchange market assists international trade and investments by enabling currency conversion. For example, it permits a business in the United States to import goods from European Union member states, especially Eurozone members, and pay Euros, even though its income is in United States dollars.

  8. Clairaut's equation - Wikipedia

    en.wikipedia.org/wiki/Clairaut's_equation

    In mathematical analysis, Clairaut's equation (or the Clairaut equation) is a differential equation of the form = + where is continuously differentiable. It is a particular case of the Lagrange differential equation.

  9. Economy of East Asia - Wikipedia

    en.wikipedia.org/wiki/Economy_of_East_Asia

    By 1100, the Song dynasty hosted a population of almost 100 million people while large cities had over 1 million inhabitants, a sophisticated medieval economic system boasting the use of paper money (written business contracts, mercantile credits, checks, promissory notes, bills of exchange), and was a maritime naval power with extensive and ...