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A complex number can be visually represented as a pair of numbers (a, b) forming a vector on a diagram called an Argand diagram, representing the complex plane. Re is the real axis, Im is the imaginary axis, and i is the "imaginary unit", that satisfies i 2 = −1.
In mathematics, a real number is a number that can be used to measure a continuous one-dimensional quantity such as a distance, duration or temperature.Here, continuous means that pairs of values can have arbitrarily small differences.
The manipulations of the Rubik's Cube form the Rubik's Cube group.. In mathematics, a group is a set with an operation that associates an element of the set to every pair of elements of the set (as does every binary operation) and satisfies the following constraints: the operation is associative, it has an identity element, and every element of the set has an inverse element.
Medical condition Alzheimer's disease Other names Alzheimer's dementia Diagram of a normal brain compared to the brain of a person with Alzheimer's Pronunciation / ˈ æ l t s h aɪ m ər z ˈ ɑː l t s -/ Specialty Neurology Symptoms Memory loss, problems with language, disorientation, mood swings Complications Infections, falls and aspiration pneumonia in the terminal stage Usual onset Over ...
[citation needed] Fitch raised Indonesia's long-term and local currency debt rating to BBB− from BB+ with both ratings is stable. Fitch also predicted that the economy would grow at least 6% on average per year through 2013, despite a less conducive global economic climate.
The economy of South Africa is a mixed economy, emerging market, and upper-middle-income economy, one of only eight such countries in Africa. [26] [27] [28] The economy is the most industrialised, technologically advanced, and diversified in Africa. [29]