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Livros Livros 1 - 10 de 165 sobre Thus a parabola is the locus of a point which moves so that its distance from a fixed....
" Thus a parabola is the locus of a point which moves so that its distance from a fixed point is equal to its distance from a fixed straight line (see fig. "
A Treatise on Plane Co-ordinate Geometry as Applied to the Straight Line and ... - Página 141
de Isaac Todhunter - 1862 - 326 páginas
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An Analytical System of Conic Sections: Designed for the Use of Students

Henry Parr Hamilton - 1834 - 207 páginas
...intersection is the directrix. ON THE ELLIPSE. CHAPTER I. ON THE ELLIPSE REFERRED TO ITS AXES. 92. To find the equation to the ellipse. The ellipse is the locus of a point whose distance from the focus is always less, in a given ratio, than its distance from the directrix....
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An Analytical System of Conic Sections: Designed for the Use of Students

Henry Parr Hamilton - 1834 - 207 páginas
...intersection is the directrix. ON THE ELLIPSE. CHAPTER I. ON THE ELLIPSE REFERRED TO ITS AXES. 92. Tofind the equation to the ellipse. The ellipse is the locus of a point whose distance from the focus is always less, in a given ratio, than its distance from the directrix....
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A Treatise on Conic Sections and the Application of Algebra to Geometry

John Hymers - 1837 - 130 páginas
...contained by AN, NP. SECTION VII. ON THE ELLIPSE. Various forms of the equation to the Ellipse. 4 104. To find the equation to the Ellipse. The ellipse is the locus of a point, whose distance from a given point is always less than its distance from a given fixed line, in a constant...
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Two Geometrical Memoirs on the General Properties of Cones of the Second ...

Michel Chasles, Charles Graves - 1837 - 112 páginas
...contained by AN, NP. SECTION VII. ON THE ELLIPSE. Various forms of the equation to the Ellipse. 104. To find the equation to the Ellipse. The ellipse is the locus of a point, whose distance from a given point is always less than its distance from a given fixed line, in a constant...
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A treatise on plane co-ordinate geometry

1855 - 299 páginas
...consequences of the definitions in Art. 123. 125. To find the equation to the Parabola. A parabola is the locus of a point which moves so that its distance from a fixed point is equal to its distance from a fixed straight line. Let S be the fixed point, YY' the fixed straight...
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A treatise on plane co-ordinate geometry

Isaac Todhunter - 1862
...of contact of the tangents from (h, A) are represents ty the equation CHAPTEE IX. THE ELLIPSE. 158. To find the equation to the ellipse^ The ellipse is the locus of a point which moves so that its .istance from a fixed point bears a constant ratio to its disance from a fixed straight line, the ratio...
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A mathematical course for the University of London. (2nd)

Thomas Kimber - 1865 - 192 páginas
...normals at the ends of the latera recta. 16. Find the equation to the hyperbola, considering it as the locus of a point which moves, so that its distance from one fixed point differs by a constant quantity from its distance from another fixed point. Show that...
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An Elementary Manual of Coordinate Geometry and Conic Sections

Rev. James White - 1878 - 148 páginas
...both in simplicity and in the importance of its applications, is the parabola. It may be defined as The locus of a point which moves so that its distance from a fixed point is equal tu its distance from a fixed straight line. The fixed point (F in figure) is called the focus...
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Mathematical Formulae: For the Use of Candidates Preparing for the Army ...

Robert Marriott Milburn - 1880 - 100 páginas
...double ordinate through the focus of a conic section is called the latus rectum. 40. Def. A parabola is the locus of a point which moves so that its distance from a fixed point is equal to its distance from a fixed straight line. A the vertex ; S the focus ; AS=a,- AM=x; MF^y....
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London graduation mathematics, questions in arithmetic and algebra set from ...

Thomas Kimber - 1880
...b. 16. Show that an equation of the form х» + y2+A x + В у = С represents a circle. Investigate the locus of a point which moves so that its distance from one fixed point bears a constant ratio to its distance from another. 17. Trace the curve represented...
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