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 ▼Entertainment | Wha  deolinda prata 13/1/3(木) 21:15

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 ■題名 : Entertainment | Wha
 ■名前 : deolinda prata <trw7u71562001@gmail.com>
 ■日付 : 13/1/3(木) 21:15
 ■Web : http://www.ichae-kors-handbagsoutlet.com
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   . {2|Two}. {Show that|Reveal that} {the general|the overall} {equation|formula} ^x2 + Bxy + Cy^ + Dx + {Ey|At they} + F=0 {may be|might be} {simplified|simple} {by|through} {translation|interpretation} {only|just}, {so that the|so the} {new|brand new} {equation|formula} {contains|consists of} {no|absolutely no} {terms of the|the} {first|very first} {degree|diploma} {in|within} {x|by} {and|as well as} {y|b}, {if the|when the} {coordinates|harmonizes} {of the|from the} {new|brand new} {origin|source} {h, k) satisfy the equations 2Ah + Bk + D = 0, Bh + 2 Ck + E = 0. Ilence show that the new origin {h, k) is the center of the locus, unless B- 窶 4AC = 0. In the latter case the transformation fails. 72. Conic sections. Historically, the parabola, ellipse, and hyperbola were discovered as plane sections of a right circular cone. Hence the generic term used for them, 窶 conic sections or conies. A definition often used, which will include all conic sections, is the following : When a point P moves so that its distances 186 NEW ANALYTIC GEOMETRY from a given fixed point and a given fixed line ewe in a constant ratio, the locus is a conic. The given fixed line is called the directrix, the fixed point the focus, and the number representing the ratio of the dis- tances of P from the focus and

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━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━    通常モードに戻る  ┃  INDEX  ┃  ≪前へ  │  次へ≫    ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━                                 Page 528736