Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

Login

Username

Password

Not registered yet?

#1 2005-08-08 15:32:00

wcy
Full Member

Offline

Vectors question

i have some trouble proving this vector question:

The points A,B,C,D have position vectors a, b, c, d with respect to the origin O. The position vector m, of M on AC such that xAM=yMC, where x+y=1.

Show that if A,B,C,D are points on a sphere, centered at O, and if AC meets BD at M, where xBM=yMD with x+y=1, then

xy|a-c|=xy|b-d|

(bolded letters are vectors)

Last edited by wcy (2005-08-08 15:33:09)

#2 2005-08-13 21:08:40

wcy
Full Member

Offline

Re: Vectors question

can someone pls help me with this question, i am stuck at it for weeks

#3 2005-08-14 10:37:51

kylekatarn
Power Member

Offline

Re: Vectors question

I got nothing till' now.
But I'll keep on trying for shure

Board footer

Powered by FluxBB