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单词 curve of tangents
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curve of tangents
curve of tangents n. Geometry rare (a) a curve whose ordinates are the tangents of their corresponding abscissae; the graph of the function tan x (obsolete); (b) (in projective geometry) a curve derived from another in such a way that each point corresponds to a tangent line of the original curve in a particular way; the dual (dual adj. and n. Additions) of a curve.
ΚΠ
1821 J. Leslie Geom. Anal. iii. xiii. 409 Their vertices will be in what is thence called the Curve of Tangents.
1986 Pacific Jrnl. Math. 124 321 C* ⊂ P2* will denote the dual curve of tangents to C.
2002 A. M. Bonifant & M. Dabija in C. J. Earle et al. Complex Manifolds & Hyberbolic Geom. 18 The dual curve.., defined as the curve of tangents to C, is a sextic.
extracted from curveadj.n.
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