In geometry, a quadratrix (from Latin quadrator 'squarer') is a curve that can be used for quadrature, constructing the area under another curve. For instance, in integral calculus as developed by Gottfried Wilhelm Leibniz, the quadratrix of a curve (the graph of a function) was another curve, the graph of its indefinite integral: the area under the first curve could be constructed from the y {\displaystyle y} -coordinates of points on the quadratrix.
In geometry, a quadratrix (from Latin quadrator 'squarer') is a curve that can be used for quadrature, constructing the area under another curve. For instance, in integral calculus as developed by Gottfried Wilhelm Leibniz, the quadratrix of a curve (the graph of a function) was another curve, the graph of its indefinite integral: the area under the first curve could be constructed from the y {\displaystyle y} -coordinates of points on the quadratrix.
Source: Wikipedia "Quadratrix" · CC BY-SA 4.0
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