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Review of conic

Line between the position of general solutions of equations with a swollen and i apartment jinsong Tang dismiss South: 3. Shift to using non-standard location of the standard conic into place: a common luxuriant cashmere and 43 with the elliptical garden, Song of a solution l: 36 Ellipse 9 +4 a focus for the (。,±), under the meaning of the questions the credibility stubble requirements set by the ellipse equation is: so + I 1 (> 0) * to a 2, 3 Xin substituted one by one too ÷ + a 'solution was discarded, one by one 10' two b / it asked for the elliptical equation: the x2 y2 a L a hail '1 l-Nang ■ _ twenty-one hide Gao Edition 『_ ~ is a ~ l2Jl1O0, JPF {if and only if a 10 to take a IPFI equal sign. I Ji: snow, etc. and I have known one by one parabolic point M (O, z intersect at A, B two points,[link widoczny dla zalogowanych], 0 for the origin of coordinates,[link widoczny dla zalogowanych], if the straight line OA, OB and the slope of the equation for the line z. Bi: Let Point A (2t1, a 2t), B (2t2, a 2), it is one hundred and eleven m tl, Chi ∞ one by one t2. one by one 2tf +2 t; a,[link widoczny dla zalogowanych],.., one by one '. 2t1-2t2 A , point A, B.2005 11 years younger rob (1) Find the hyperbola (the range of eccentricity; (2) Let a straight line with the axis of intersection is P, and one demand.'s value. Solution: (1) South (and intersect at two different points, a 。=:=' j equations knows there are two l + yI1-0 different real solutions, eliminate Y and order may: (1 2a a a 2a 一 0, ① so l a >, and ≠ (2) set point A (, y), B (2, y2), easy to get points P (0,1). by a, y ~ - 1 which was a.. because,! are ① the root of the equation,[link widoczny dla zalogowanych], and the l-a. ≠ o. .·.,- l-~ 'z one by one, and .... A * Lu I. ... side 289. and 'argument based on a parabola-z +3- l there on the line z + y 10 different symmetric points, find the coordinates of two points. Solution: Let two points for the A (zl, y1), B (2, Y2), it is ∞-1. Let the equation of line AB as Y-+ b, generation Y-z. +3 x6 o. make a mid-point of AB is for the M (。,。),. A ugly Health: 1 have z. +2 x-ll, yo-l, generation y-+ b, the obtained b-2. the b-2 generation. +2- l-b 10, the have a 3 z +2 -0. one by one and a .2 C2 l, one by one lIY2-3 .... are asking the coordinates of two points (a 3, a 1), (1,3). l do. line: Y One + l and a hyperbola z Y. a cross in the left branch of l, A, B two points, line Z passes through the point P (a 2,0) and the midpoint of segment AB, M, Z in the Y axis the Line intercept b, range.,,, a r +1. Solution: From {II z-yz-l (≤ A 1) have a - [-2k ~'-[- 2 = O. According to a meaning of the questions have △ 4k +8 (1 first.)> o, and + z- l, then l <go, r ● J, ● ● ● 2005, only 11 cents cents a transcript of Mongolia heavy rain strong _; - ■ ■ strong squirt bundle home pulp and then cracking Jiang humble bow snapped 1, r,! · training students for a number of physical and chemical training lj ■ ■ _ high school version of gulls Huan Xiao Da Hainan Haikou City of squatting Qiang Cui Jia per mold mildew build i j Li Lian capsule DW lli -

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