B bird 知名会员 注册 2002-12-08 消息 168 荣誉分数 1 声望点数 178 2012-12-01 #1 Let G be the graph of y=1/x. H is the reflection of G in the line y=2x. The equation of H can be written as 12X^2 + bxy + cy^2 +d =0. Find the value of b, c, d.
Let G be the graph of y=1/x. H is the reflection of G in the line y=2x. The equation of H can be written as 12X^2 + bxy + cy^2 +d =0. Find the value of b, c, d.
M mmb 知名会员 注册 2007-04-24 消息 319 荣誉分数 9 声望点数 178 2012-12-02 #2 http://www.cimt.plymouth.ac.uk/projects/mepres/alevel/fpure_ch9.pdf new_x = (-3x+4y)/5 new_y = (4x+3y)/5 代入上面的方程 (new_x)(new_y) =1 (-3x+4y)(4x+3y)=25 解出B,C,D
http://www.cimt.plymouth.ac.uk/projects/mepres/alevel/fpure_ch9.pdf new_x = (-3x+4y)/5 new_y = (4x+3y)/5 代入上面的方程 (new_x)(new_y) =1 (-3x+4y)(4x+3y)=25 解出B,C,D
