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Alegra is the study of operations and their application to solving equations.

Contributors in Algebra


Antikythera mechanism

Mathematics; Algebra

The Antikythera mechanism is an analog computer that was used by the Greeks more than 2000 years ago to locate and predict the positions of celestial objects. When new, the device was made of bronze ...

arythmetic series

Mathematics; Algebra

A series such as 3 + 7 + 11 + 15 + ··· + 99 or 10 + 20 + 30 + ··· + 1000 which has a constant difference between terms.


Mathematics; Algebra

A line or curve that the graph of a relation approaches more and more closely the further the graph is followed.

augmented matrix

Mathematics; Algebra

A matrix form of a linear system of equations obtained from the coefficient matrix as shown below.

average rate of change

Mathematics; Algebra

The change in the value of a quantity divided by the elapsed time.

axis of reflection

Mathematics; Algebra

The "mirror line" of a reflection. That is, the line across which a reflection takes place.

axis of symmetry

Mathematics; Algebra

A line of symmetry for a graph. The two sides of a graph on either side of the axis of symmetry look like mirror images of each other.

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