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Hace 3 horas · Definition and basic operations Various complex numbers depicted in the complex plane. A complex number is an expression of the form a + bi, where a and b are real numbers, and i is an abstract symbol, the so-called imaginary unit, whose meaning will be explained further below.For example, 2 + 3i is a complex number. For a complex number a + bi, the real number a is called its real part, and ...
Hace 1 día · Quaternions were first described by the Irish mathematician William Rowan Hamilton in 1843 [1] [2] and applied to mechanics in three-dimensional space. The algebra of quaternions is often denoted by H (for Hamilton ), or in blackboard bold by Quaternions are not a field, because multiplication of quaternions is not, in general, commutative.
Hace 1 día · To help compare different orders of magnitude this section lists lengths between 10 −11 and 10 −10 m (10 pm and 100 pm). 25 pm – approximate radius of a helium atom, the smallest neutral atom. 30.8568 pm – 1 rontoparsec. 50 pm – radius of a hydrogen atom. 50 pm – bohr radius: approximate radius of a hydrogen atom.
Hace 3 horas · 1. Descarga e instala LDPlayer en tu computadora. 2. Encuentra Play Store en las aplicaciones del sistema de LDPlayer, inícialo e inicia sesión en tu cuenta de Google. 3. En el cuadro de búsqueda, ingresa y busca Space Adventure 2. 4. Selecciona y instala Space Adventure 2 de los resultados de búsqueda. 5.
Hace 3 horas · The global African diaspora is the worldwide collection of communities descended from people from Africa, predominantly in the Americas. The African populations in the Americas are descended from haplogroup L genetic groups of native Africans. The term most commonly refers to the descendants of the native West and Central Africans who were enslaved and shipped to the Americas via the Atlantic ...
Hace 1 día · The cat (Felis catus), commonly referred to as the domestic cat or house cat, is a small domesticated carnivorous mammal. It is the only domesticated species of the family Felidae.Recent advances in archaeology and genetics have shown that the domestication of the cat occurred in the Near East around 7500 BC.It is commonly kept as a house pet and farm cat, but also ranges freely as a feral cat ...
Hace 1 día · Meditation is a practice in which an individual uses a technique – such as mindfulness, or focusing the mind on a particular object, thought, or activity – to train attention and awareness, and achieve a mentally clear and emotionally calm and stable state.. Defining meditation has proven difficult due to its wide range of practices across different traditions and cultures.
