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Definition. The RMS value of a set of values (or a continuous-time waveform) is the square root of the arithmetic mean of the squares of the values, or the square of the function that defines the continuous waveform.
Footnotes. Sources. Forty Scenes of the Yuanmingyuan. The painting series Forty Scenes of the Yuanmingyuan depicts historically recognized vistas in the Old Summer Palace in Beijing, China. In 1744, the Qianlong Emperor commissioned a set of forty paintings from two court artists, Shen Yuan and Tangdai, and a calligrapher, Wang Youdun. [1] .
The number π (/paɪ/; spelled out as "pi") is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulae across mathematics and physics. It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although ...
In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) [1] [2] are real functions which relate an angle of a right-angled triangle to ratios of two side lengths.
Zhou Cang is a fictional character in the 14th-century Chinese historical novel Romance of the Three Kingdoms . Story. Guan Yu (left) and Zhou Cang (right) carrying Guan Yu's Green Dragon Cresent Blade, as depicted on a rubbing from a 1574 stele in Cishou Temple, located just outside Beijing.
In elementary algebra, the quadratic formula is a closed-form expression describing the solutions of a quadratic equation. Other ways of solving quadratic equations, such as completing the square, yield the same solutions.
A paifang, also known as a pailou, is a traditional style of Chinese architecture, often used in arch or gateway structures. Etymology. The word paifang ( Chinese: 牌坊; pinyin: páifāng) was originally a collective term for the top two levels of administrative division and subdivisions of ancient Chinese cities.