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É or é ( e - acute) is a letter of the Latin alphabet. In English, it is used for loanwords (such as French résumé ), romanization (Japanese Pokémon) or occasionally as a pronunciation aid in poetry. Languages may use é to indicate a certain sound ( French ), stress pattern ( Spanish ), length ( Czech) or tone ( Vietnamese ), as well as ...
Euler's identity. In mathematics, Euler's identity [note 1] (also known as Euler's equation) is the equality. is pi, the ratio of the circumference of a circle to its diameter. Euler's identity is named after the Swiss mathematician Leonhard Euler. It is a special case of Euler's formula when evaluated for .
Prannoy Roy. Prannoy Lal Roy (born 15 October 1949) is an Indian economist, chartered accountant, psephologist, journalist and author. [5] He is the former executive co-chairperson of NDTV and is considered to be one of its co-founders, along with his wife Radhika Roy. NDTV was the first independent news network in India.
Log-normal distribution. In probability theory, a log-normal (or lognormal) distribution is a continuous probability distribution of a random variable whose logarithm is normally distributed. Thus, if the random variable X is log-normally distributed, then Y = ln (X) has a normal distribution.
Common logarithm. A graph of the common logarithm of numbers from 0.1 to 100. In mathematics, the common logarithm is the logarithm with base 10. [1] It is also known as the decadic logarithm and as the decimal logarithm, named after its base, or Briggsian logarithm, after Henry Briggs, an English mathematician who pioneered its use, as well as ...
Login.gov is a single sign-on solution for US government websites. It enables users to log in to services from numerous government agencies using the same username and password. Login.gov was jointly developed by 18F and the US Digital Service . [1]
The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. At 20 °C (68 °F), the speed of sound in air is about 343 m/s (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn ), or 1 km in 2.91 s or one mile in 4.69 s. It depends strongly on temperature as well as the medium through which a ...
The linear–log type of a semi-log graph, defined by a logarithmic scale on the x axis, and a linear scale on the y axis. Plotted lines are: y = 10 x (red), y = x (green), y = log ( x ) (blue). In science and engineering, a semi-log plot / graph or semi-logarithmic plot / graph has one axis on a logarithmic scale, the other on a linear scale.