| 释义 |
first polarMathematics nounA curve of degree n related to a given curve C of degree n + 1 and a point P by containing every point of C whose tangent passes through P.- Usually called simply a polar. The first polar of a circle is a straight line: compare polar. In mathematical terms: (of a point (a 0, a 1,…an) with respect to a curve described by the homogeneous function f(x 0, x 1,…x n) = 0) the curve represented by the equation Σi a i ∂f/∂x i = 0..
Origin Mid 19th century; earliest use found in Augustus De Morgan (1806–1871), mathematician and historian. |