CE Amath問題

杰少仔

http://pcin.sytes.net/uploads/post-4-1114482814.jpg
http://pcin.sytes.net/uploads/post-4-1114482835.jpg

b(iii)點做


http://pcin.sytes.net/uploads/post-4-1114483551.jpg

C(i) 點做..

2076

Originally posted by 杰少仔 at 2005-4-26 06:29 PM:
http://pcin.sytes.net/uploads/post-4-1114482814.jpg
http://pcin.sytes.net/uploads/post-4-1114482835.jpg

b(iii)點做


[url]http://pcin.sytes.net/uploads/post-4-111448 ...

第一題:
(a)(i)已經唔識做

第二題:
(c)(i)(1) 4sin(theta)
(2) 代番D數去part a條式度

[ Last edited by 2076 on 26-4-2005 at 07:49 PM ]

Sol_Campbell

b(iii)
你將D既x, y coordinates link埋就ok
x=t1^2+t2^2+1
y=t1+t2
y^2=t1^2+t2^2+2t1t2
t1^2+t2^2=x-1
y^2=x-1+2t1t2----(冇計bi,唔知t1t2等於咩)

天生射手

Originally posted by 2076 at 2005-4-26 19:46:


第一題:
(a)(i)已經唔識做

[ Last edited by 2076 on 26-4-2005 at 07:49 PM ]

分條Parabola的equation一半身家呀
i.e. y^2=4x
y^2=>2(t1)y
x=>[x+(t1^2)]/2

杰少仔

第一條ok 喇

但第二題唔明,....