Problems and ExamplesDeighton, Bell and Company, 1862 - 141 strán (strany) |
Vyhľadávanie v obsahu knihy
Výsledky 1 - 5 z 28.
Strana 63
... focus and a common tangent is a circle . 2. A circle touches the parabola at the vertex A. BA'C is that double ordinate of the axis which touches the circle at A ' , RPNP ' any other ordinate of the axis , meeting the axis in N , and AB ...
... focus and a common tangent is a circle . 2. A circle touches the parabola at the vertex A. BA'C is that double ordinate of the axis which touches the circle at A ' , RPNP ' any other ordinate of the axis , meeting the axis in N , and AB ...
Strana 64
... focus is a parabola . 13. If SQ be perpendicular to the normal at P , QR to SP , PRAS . 14. If a parabola roll on an equal parabola , the vertices originally coinciding , the focus of the rolling traces out the directrix of the fixed ...
... focus is a parabola . 13. If SQ be perpendicular to the normal at P , QR to SP , PRAS . 14. If a parabola roll on an equal parabola , the vertices originally coinciding , the focus of the rolling traces out the directrix of the fixed ...
Strana 65
... focus an angle which is double the angle between the tangents at its extremities . 27. The circle drawn through the intersections of three tangents to a parabola passes also through the focus . 28. If S be the focus of the parabola ...
... focus an angle which is double the angle between the tangents at its extremities . 27. The circle drawn through the intersections of three tangents to a parabola passes also through the focus . 28. If S be the focus of the parabola ...
Strana 66
... focus and the length of the axis major ; describe an ellipse touching two given straight lines . 4. Given a focus and three tangents ; construct the ellipse . 5. Given the foci ; describe an ellipse touching a given straight line . 6 ...
... focus and the length of the axis major ; describe an ellipse touching two given straight lines . 4. Given a focus and three tangents ; construct the ellipse . 5. Given the foci ; describe an ellipse touching a given straight line . 6 ...
Strana 67
... focus perpendicular to the tangents at the extremities of any diameter ; if on this line as diameter a circle is described , prove that the chord which passes through the focus and is parallel to either tangent is equal to the axis ...
... focus perpendicular to the tangents at the extremities of any diameter ; if on this line as diameter a circle is described , prove that the chord which passes through the focus and is parallel to either tangent is equal to the axis ...
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Časté výrazy a frázy
2nd Edition 3rd Edition 4th Edition acceleration tending arithmetical arithmetical mean arithmetical series bisected centre of gravity chord circle concave cone Conic Sections conjugate convex lens Crown 8vo cylinder determine diameter directrix distance drawn Elementary ellipse English equal equation extremity F. A. Paley Fcap feet Find the number find the value fluid focal length foci focus geometrical progression given point given weight harmonic mean horizontal inches incident inclined plane inscribed intersection Latin latus rectum locus luminous point middle point mirror Multiply parabola parallel particle describes passing perpendicular position Post 8vo pressure prism projected prove pully quantity radii radius ratio reflected refracting respectively shew sides sin² specific gravity sphere spherical square straight line string subtends surface tangent tower velocity vertex vertical
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