Definition of Directrixes
1. directrix [n] - See also: directrix
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Lexicographical Neighbors of Directrixes
Literary usage of Directrixes
Below you will find example usage of this term as found in modern and/or classical literature:
1. Inductive Geometry, Or, An Analysis of the Relations of Form and Magnitude by Charles Bonnycastle (1834)
"This condition will be insured, if we suppose the generatrix to be guided by two directrixes, that have their corresponding positions parallel. ..."
2. Iron: An Illustrated Weekly Journal for Iron and Steel Manufacturers edited by Sholto Percy, Perry Fairfax Nursey (1840)
"1) represent a parabola jad its foci ; and no,pq, its two directrixes. Then, since ai + tk = l k+ki, and dk + ki=:mi + ik; bence, a » + » k + kd=mi+ik + kl. ..."
3. Annual Report of the United States Geological and Geographical Survey of the by Geological and Geographical Survey of the Territories (U.S.), United States General Land Office, United States Dept. of the Interior (1874)
"... their own engineer making the connection with the city-directrixes at both termini. If these levels are run with care, the elevation of Saint Louis, ..."
4. The Mechanics' Magazine, Museum, Register, Journal, and Gazette (1840)
"1) represent a parabola ; ad its foci ; and no, pq, its two directrixes. Then, since ai + » k = I k+ki, and dk + ki^mi + ik; hence, ai + » i + kd=mi+ik+kl. ..."
5. Notes on Analytical Geometry: An Appendix by Alfred Clement Jones (1903)
"Prove that the loci of its centre and the feet of its directrixes are the inverses of rectangular hyperbolas with respect to the common focus. 25. ..."