2010-02-10 01:02:08 +0000 #1
2010-02-10 01:09:33 +0000 #2
(1) first started with A, B
2:00 find the equation of a circle (2) re-established P coordinates (X, Y), M (X1, Y1)
(3) because P is a MN midpoint, so (X1 +4) divided by 2 is equal to X, (Y1-2) divided by 2 equals Y
(4) X-said X1, with Y1, said Y, so 2X-4 is equal to X1, 2Y +2 is equal to Y1
(5) because the X1, Y1 are round, so on behalf of the equation into the circle get on the trajectory of equation of P
2:00 find the equation of a circle (2) re-established P coordinates (X, Y), M (X1, Y1)
(3) because P is a MN midpoint, so (X1 +4) divided by 2 is equal to X, (Y1-2) divided by 2 equals Y
(4) X-said X1, with Y1, said Y, so 2X-4 is equal to X1, 2Y +2 is equal to Y1
(5) because the X1, Y1 are round, so on behalf of the equation into the circle get on the trajectory of equation of P
