HELP (maths)~

久違

Find the shortest and longest distance from the point (2,0) to the circle (x-1)^2+(y-1)^2=1 ???

有無人幫到我.?????唔該

yuren

你都要問人?

TAMTOM

搵個distance ,
減番個r 就係shortest ,加r 就係longest?

呢D Maths 好似咁難咁既

2076

Originally posted by TAMTOM at 2005-12-2 11:55 PM:
搵個distance ,
減番個r 就係shortest ,加r 就係longest?

呢D Maths 好似咁難咁既

好似係A.Maths
不過已經唔記得晒

TAMTOM

Originally posted by 2076 at 2005-12-3 00:25:


好似係A.Maths
不過已經唔記得晒

還曬比亞Sir

久違

Originally posted by yuren at 2005-12-2 11:43 PM:
你都要問人?

我唔知點解諗唔到...

久違

Originally posted by TAMTOM at 2005-12-2 11:55 PM:
搵個distance ,
減番個r 就係shortest ,加r 就係longest?

....我開頭都係咁諗...不過好似唔係咁我先問咋...
其實係咪真係咁????

[ Last edited by 久違 on 3-12-2005 at 01:29 AM ]

TAMTOM

Originally posted by 久違 at 2005-12-3 01:24:
....我開頭都係咁諗...不過好似唔係咁我先問咋...
其實係咪真係咁????

[ Last edited by 久違 on 3-12-2005 at 01:29 AM ]

你唔知answer 咩 ,計完對下answer 咪知囉

不過我諗岩掛 ,連住centre個個點既距離得一個條直線 ,減番個radius 仲唔係shortest?
個圓最長既直線就係 2r,咁shortest + 2r 仲唔係最長?(只係我諗....)

久違

Originally posted by TAMTOM at 2005-12-3 01:42 AM:

你唔知answer 咩 ,計完對下answer 咪知囉

不過我諗岩掛 ,連住centre個個點既距離得一個條直線 ,減番個radius 仲唔係shortest?
個圓最長既直線就係 2r,咁shortest + 2r 仲唔係最長?(只係我諗....:i ...

岩岩問左人...原來唔比咁計ar....
要用differentiation 黎計wo

Erlkoing上的KK

Originally posted by 久違 at 2005-12-3 01:49 AM:

岩岩問左人...原來唔比咁計ar....
要用differentiation 黎計wo

駛唔駛呀...
tamtom 個個咪ok lor~

TAMTOM

Originally posted by 久違 at 2005-12-3 01:49:

岩岩問左人...原來唔比咁計ar....
要用differentiation 黎計wo

而家D 數咁鬼煩

久違

Originally posted by Erlkoing上的KK at 2005-12-3 04:56 AM:

駛唔駛呀...
tamtom 個個咪ok lor~

我都唔想ar...佢迫人用
咁點ar

久違

Originally posted by TAMTOM at 2005-12-3 12:53 PM:

而家D 數咁鬼煩

想打十佢law

yuren

Originally posted by 久違 at 2005-12-3 22:00:

我都唔想ar...佢迫人用
咁點ar

take log...