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Subject: 中五 G.Maths MC份MOCK卷錯漏百出~


Author:
5貓頭鷹
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Date Posted: 02:03:58 03/18/03 Tue

根據5貓蛋同學提供---第14題MC 張suggested solution 話個答案係a.(-1/3) .but 一個數take 左square 之後又會係負數呢~.

根據5貓白同學提供---我敢相信唔會有人係51題MC計到個答案係b..

根據5貓9同學提供---第27題MC會唔會有D問題lei...

再根據長州碧咸提供---唔~~"i think the paper is easy...
but 有d questions 的確有問題.

再根據5貓蛇提供---邊個出ga li份卷...叫佢黎做la~信唔信我放狗
吠吠吠..~~~""

再根據abc提供---li份卷唔係我出ga..唔關我事!!

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Replies:
[> Subject: Re: 中五 G.Maths MC份MOCK卷錯漏百出~


Author:
珍姐~
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Date Posted: 02:09:36 03/18/03 Tue

>根據5貓蛋同學提供---第14題MC 張suggested solution
>話個答案係a.(-1/3) .but 一個數take 左square
>之後又會係負數呢~.

我非常絕對十分咁贊成....蛋哥~
[> Subject: Re: 中五 G.Maths MC份MOCK卷錯漏百出~


Author:
'薩殫'姆.侯賽因
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Date Posted: 23:32:34 03/18/03 Tue

>but 一個數take 左square 之後又會係負數
係complex no,你用計算機計下就知solve唔到ga la

>再根據5貓蛇提供---邊個出ga li份卷...叫佢黎做la~信唔信我放狗 吠吠吠..~~~""
係bbc出
[> Subject: Re: 中五 G.Maths MC份MOCK卷錯漏百出~


Author:
Bobby仔
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Date Posted: 05:11:44 03/19/03 Wed

#14:
By the eq. 3X^2 + 3X + 1 = 0
A+B = -1, AB = 1/3
so (A-B)^2 = (A+B)^2 - 4AB = (-1)^2 - 4(1/3) = -1/3
答案無錯!

#51 真係有問題

#27
個問題係話Alternatively,所以當B擲完後,A再摘,所以個Probability係:
第1次B 贏's Probability : 1/4
第2次B 贏's Probability : 1/4 * 1/4
第3次B 贏's Probability : 1/4 * 1/4 * 1/4
and then去到無限,所以個Solution係GP Sum to Inf.(1st term is 1/4, common ration is 1/4)
即係a/(1-r) = (1/4)/(1- 1-4) = (1/4)/(3/4) = 1/3
答按都無錯喎

即係話你所指的三條,其實係得一條有問題,反而#39及#45就有問題...
[> [> Subject: Re: 中五 G.Maths MC份MOCK卷錯漏百出~


Author:
strange..
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Date Posted: 22:31:03 03/19/03 Wed

(A-B)^2 = -1/3 ?????????????!!!!!!!!!
[> [> [> Subject: y not?


Author:
z
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Date Posted: 00:08:38 03/20/03 Thu

complex number

i square 夠係 -1
[> Subject: 第43題


Author:
中五人
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Date Posted: 05:48:03 03/20/03 Thu

II的答案ACQ 和CQB 位置都對錯
[> Subject: 第43題


Author:
中五人
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Date Posted: 05:48:06 03/20/03 Thu

II的答案ACQ 和CQB 位置都對錯
[> [> Subject: Re: 第43題


Author:
Bobby仔
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Date Posted: 23:42:50 03/22/03 Sat

>II的答案ACQ 和CQB 位置都對錯
晌低Form既角度係無錯
但晌F3或以上就係錯....

方Sir都話有問題!!


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