 | Daniel Coit Gilman, Harry Thurston Peck, Frank Moore Colby - 1906 - 926 páginas
...hyper, over + fiaWeiv, baUein, to throw). One of the conic sections, (qv). Analytically, the hyperbola is the locus of a point which moves so that its distance from a fixed point, called the focus, bears a constant ratio greater than unity to its distance from a fixed straight line,... | |
 | William Meath Baker - 1906 - 363 páginas
...subtend a right angle at a given point of the curve intersect on the normal at that point. 7. Prove that the locus of a point, which moves so that its distance from a fixed line is equal to the length of the tangent drawn from it to a given circle, is a parabola. Find the... | |
 | Henry Adams - 1907 - 594 páginas
...point is said to move with simple harmonic motion. 96. PARABOLA. A parabola is the path traced out by a point which moves so that its distance from a fixed point called the focus is the same as its perpendicular distance from a fixed straight line, called the directrix.... | |
 | Charlotte Angas Scott - 1907 - 452 páginas
...given. The two following examples illustrate the complete solution of two .problems. Example i. — Find the locus of a point which moves so that its distance from the point (4, 0) is twice its distance from the point (1, 0). (i) State in geometrical terms — AP... | |
 | Royal Society of Canada - 1908 - 1112 páginas
...— which are analogous to the conic sections of analytical plane geometry. We define the curve to be the locus of a point which moves so that its distance from a given point bears always a fixed ratio to its distance from a given great circle. XI. The case where... | |
 | Daniel Coit Gilman, Harry Thurston Peck, Frank Moore Colby - 1909 - 956 páginas
...hyper, over + fiaWeiv, ballein, to throw). One of the conic sections, (qv). Analytically, the hyperbola is the locus of a point which moves so that its distance from a fixed point, called the focus, bears a constant ratio greater than unity to its distance from a fixed straight line,... | |
 | Victor Tyson Wilson, Carlos Lenox McMaster - 1909 - 204 páginas
...first directed. 82. To draw a parabola by means of the focus. A parabola is denned in mathematics, as the locus of a point which moves, so that its distance from a fixed point, called the focus, is equal to its distance - from a fixed line, called the directrix. Let DD' (Fig.... | |
 | George Nicol - 1909 - 366 páginas
...intersection of a right cone with a plane parallel to one of its sides ; it is also sometimes defIned as the locus of a point which moves, so that — its distance from a fixed [xtint its distance from a fixed straight line Fig. 6. M The fixed point is called the focus and the... | |
 | Hugh Chisholm - 1910 - 1012 páginas
...of the curve will be given. To investigate the form of the curve use. may be made of the definition: the ellipse is the locus of a point which moves so that the ratio of its distance from a fixed point (the /of«) to its distance from a straight line (the... | |
 | 1910 - 1018 páginas
...of the curve will be given. To investigate the form of the curve use may be made of the definition: the ellipse is the locus of a point which moves so that the ratio of its distance from a fixed point (the focus) to its distance from a straight Une (the directrix)... | |
| |
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. 
