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2007-12-28 12:26 m11

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[quote]a�g�b25���ͤ�ɦs10000���i�Ȧ�

�S�b26���ͤ�ɦA�s9000��

�Ȧ���~�H�~�Q�vr%�p��ƧQ��

a�g�b27���ͤ�ɱo�쥻�Q�M�O22000��

�Dr[/quote]

���|��orz

2007-12-28 12:29 �˥�����
[quote]�쩫�� [i]m11[/i] �� 2007-12-28 12:26 PM �o��


���|��orz [/quote]
�o�ӫܮe��!!!
���L�o�ǪF��,�٬O�n�ۤv��s���ץX��,�~�i�H�u���Ǩ쪺!~!!����!!�M�h!!(�t�k)

2007-12-28 12:30 �P��y��

�^�_ #1 m11 �����l



��,�ܦn�����D...(��)
���ƦX�v(?)
��,�ڧѤF�簵�F(�F��)

2007-12-28 12:44 unobi
10000+2(10000r)+9000+9000r=22000

�n���Y�ݡK

�ۦ�ѨM

2007-12-28 12:56 m11
[quote]�쩫�� [i]unobi[/i] �� 2007-12-28 12:44 �o��
10000+2(10000r)+9000+9000r=22000

�n���Y�ݡK

�ۦ�ѨM [/quote]
�ݤ���ʨ


��꦳part a....

10x^2+9x-22=0

x=1.1   ï¿½ï¿½x=-2

.........................

2007-12-28 12:58 �P��y��

�^�_ #6 m11 �����l



��ӬO�o�ع�(��)
�ܤ[�S�ݹL�F(����)

2007-12-28 12:58 s35op32
[quote]�쩫�� [i]m11[/i] �� 28/12/07 12:56 �o��

�ݤ���ʨ


��꦳part a....

10x^2+9x-22=0

x=1.1   ï¿½ï¿½x=-2

......................... [/quote]

part a�����D�M�����٨S�����ڭ̴N��t�@part�K�X��= =

2007-12-28 13:02 m11
[quote]�쩫�� [i]s35op32[/i] �� 2007-12-28 12:58 �o��


part a�����D�M�����٨S�����ڭ̴N��t�@part�K�X��= = [/quote]
�]���ݨӨS�����Y��(��

2007-12-28 13:03 unobi
��'�꨺�OptC����

ptB�b�o�K

(1+2+3+4+...+99+100+99+...+4+3+2+1)+(2+3+4+...+99+100+99+...4+3+2)+...+(99+100)+100+(99+100)+...+(2+3+4+...+99+100+99+...4+3+2)+(1+2+3+4+...+99+100+99+...+4+3+2+1)=�H

2007-12-28 13:03 m11
[quote]�쩫�� [i]unobi[/i] �� 2007-12-28 13:03 �o��
��'�꨺�OptC����

ptB�b�o�K

(1+2+3+4+...+99+100+99+...+4+3+2+1)+(2+3+4+...+99+100+99+...4+3+2)+...+(99+100)+100+(99+100)+...+(2+3+4+...+99+100+99+...4+3+2)+(1+2+3+4+...+99+100+99+...+4+3+2+1)=�H [/quote]
...

�n���n��Ѥ������e��X�Ӱ�(�쨫

2007-12-28 13:06 unobi
[quote]�쩫�� [i]m11[/i] �� 2007-12-28 13:03 �o��

...

�n���n��Ѥ������e��X�Ӱ�(�쨫 [/quote]
ʨ

�¤F

2007-12-28 13:12 ��.��
[10000x(1+r)+9000]x(1+r)=22000

(19000+10000x r)x(1+r)=22000

19000+10000x r+19000x r+10000(r)�s2=22000

10000(r)�s2+29000(r)-3000=0

10(r)�s2+29(r)-3=0

�G������

r=10%��-3(�˥h)

2007-12-28 13:13 �˥�����
[quote]�쩫�� [i]��.��[/i] �� 2007-12-28 01:12 PM �o��
x(1+r)=22000

(19000+10000x r)x(1+r)=22000

19000+10000x r+19000x r+10000(r)�s2=22000

10000(r)�s2+29000(r)-3000=0

10(r)�s2+29(r)-3=0

�G������

r=10%��-3(�˥h) [/quote]
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2007-12-28 14:50 �P��
a�g�b25���ͤ�ɦs10000���i�Ȧ�

�S�b26���ͤ�ɦA�s9000��

�Ȧ���~�H�~�Q�vr%�p��ƧQ��

a�g�b27���ͤ�ɱo�쥻�Q�M�O22000��

�Dr

[quotU]�쩫�� [i]m11[/i] �� 2007-12-28 12:26 �o��


���|��orz [/quote]
�n���O�o��
[10000x(1+r%)+9000](1+r%)=22000
[(10000+100r))9000](1+r%)=22000
(19000+100r)(1+r%)=22000
19000+190r+100r+r^2=22000
r^2+290r-3000=0
(r-10)(r+300)=0
r=10 �� -300(�˥h)

[[i] �����̫�� �P�� �� 2007-12-28 20:51 �s�� [/i]]

2007-12-28 15:01 �P��
[quote]�쩫�� [i]m11[/i] �� 2007-12-28 12:56 �o��

�ݤ���ʨ


��꦳part a....

10x^2+9x-22=0

x=1.1   ï¿½ï¿½x=-2

......................... [/quote]
part a�ݤ���orz

2007-12-28 16:36 �P��
[quote]�쩫�� [i]homika�\�p��[/i] �� 2007-12-28 16:34 �o��
���b�p....
�A����part a �� part b ���S�Ӥj���Y�� [/quote]
- -�������լ���n��parta,b
���}2�D�����= =?

2007-12-28 16:49 �ΦW

�^�_ #5 m11 �����l



�o�N�O���D

2007-12-28 17:30 homika�\�p��
[quote]�쩫�� [i]�P��[/i] �� 2007-12-28 16:36 �o��

- -�������լ���n��parta,b
���}2�D�����= =? [/quote]

�]���\�p�J �n�ΤG����{ (�S�����a)
���Y�@�Ӵ��ܦӤw

�n�h�� �p�ƪ��H�|�Q�o�˪�part a �~��

2007-12-28 18:24 �P��
[quote]�쩫�� [i]homika�\�p��[/i] �� 2007-12-28 17:30 �o��


�]���\�p�J �n�ΤG����{ (�S�����a)
���Y�@�Ӵ��ܦӤw

�n�h�� �p�ƪ��H�|�Q�o�˪�part a �~�� [/quote]
- -�~�ɤH�N�u

2007-12-28 20:51 m11
[quote]�쩫�� [i]��.��[/i] �� 2007-12-28 13:12 �o��
x(1+r)=22000

(19000+10000x r)x(1+r)=22000

19000+10000x r+19000x r+10000(r)�s2=22000

10000(r)�s2+29000(r)-3000=0

10(r)�s2+29(r)-3=0

�G������

r=10%��-3(�˥h) [/quote]
����

�¤Forz

�ש�ѨM�o�\��...

2007-12-28 20:55 �P��
[quote]�쩫�� [i]m11[/i] �� 2007-12-28 20:51 �o��

����

�¤Forz

�ש�ѨM�o�\��... [/quote]
= =�`�Oı�o�L���Ӧ�careless mistake
r���i��O%��???

2007-12-28 20:57 m11
[quote]�쩫�� [i]�P��[/i] �� 2007-12-28 20:55 �o��

= =�`�Oı�o�L���Ӧ�careless mistake
r���i��O%��??? [/quote]
���O

�Q�v�O10%
�ϥ��ѨM�F�N�n~~

2007-12-28 20:58 �P��
[quote]�쩫�� [i]m11[/i] �� 2007-12-28 20:57 �o��

���O

�Q�v�O10%
�ϥ��ѨM�F�N�n~~ [/quote]
r=10��-300(�˥h)............r=10��-3(�˥h)
= =���D�O-300�w�Y-3�~��
��F.....
�ocareless mistake
m11�S����O��a

[[i] �����̫�� �P�� �� 2007-12-28 21:02 �s�� [/i]]

2007-12-28 21:03 m11
[quote]�쩫�� [i]�P��[/i] �� 2007-12-28 20:58 �o��

r=10��-300(�˥h)............r=10��-3(�˥h)
= =���D�O-300�w�Y-3�~��
��F.....
�ocareless mistake
m11�S����O��a [/quote]
�Ѧ�����

�O10

2007-12-28 21:06 �P��
[quote]�쩫�� [i]m11[/i] �� 2007-12-28 21:03 �o��

�Ѧ�����

�O10 [/quote]
�Ѯv�ܥο�����k�ޥӨ�諸���׬O�S������orz
�ӥL���⦡���S��%�ӥu�Or���Or%
�n���i��b�o��X��
so -300�P-3�O���ܤj�����O

[[i] �����̫�� �P�� �� 2007-12-28 21:31 �s�� [/i]]

2007-12-28 23:38 ��.��
[quote]�쩫�� [i]�P��[/i] �� 2007-12-28 21:06 �o��

�Ѯv�ܥο�����k�ޥӨ�諸���׬O�S������orz
�ӥL���⦡���S��%�ӥu�Or���Or%
�n���i��b�o��X��
so -300�P-3�O���ܤj�����O [/quote]
-3=-300%

no%

so is -3

ok?

[[i] �����̫�� ��.�� �� 2007-12-28 23:41 �s�� [/i]]

2007-12-29 11:13 �P��
[quote]�쩫�� [i]��.��[/i] �� 2007-12-28 23:38 �o��

-3=-300%

no%

so is -3

ok? [/quote]
�b�D�ؤ�
r�w�g���]�A%(r%)
so r=10%��-3
r=10%=0.1
r=-3=-300%��=-300
so���i��
�ӥB���|�Τ@�ӥH%�ΫD%����ans

[[i] �����̫�� �P�� �� 2007-12-29 11:16 �s�� [/i]]

2007-12-29 11:25 ���y
�A�̭p�o�u����
�����o�˭p�N�i�H
10000(1+r)^2+9000(1+r)=22000
�]1+r=x
10000x^2+9000x-22000=0
10x^2+9x-22=0
x=1.1   ï¿½ï¿½x=-2(��)
�ѩ�x=1+r
�ҥHr=0.1
0.1*100%
r=10%

[[i] �����̫�� ���y �� 2007-12-29 11:27 �s�� [/i]]

2007-12-29 11:52 m11
[quote]�쩫�� [i]���y[/i] �� 2007-12-29 11:25 �o��
�A�̭p�o�u����
�����o�˭p�N�i�H
10000(1+r)^2+9000(1+r)=22000
�]1+r=x
10000x^2+9000x-22000=0
10x^2+9x-22=0
x=1.1   ï¿½ï¿½x=-2(��)
�ѩ�x=1+r
�ҥHr=0.1
0.1*100%
r=10% [/quote]
���parta�u������==

2007-12-29 11:53 �P��
[quote]�쩫�� [i]���y[/i] �� 2007-12-29 11:25 �o��
�A�̭p�o�u����
�����o�˭p�N�i�H
10000(1+r)^2+9000(1+r)=22000
�]1+r=x
10000x^2+9000x-22000=0
10x^2+9x-22=0
x=1.1   ï¿½ï¿½x=-2(��)
�ѩ�x=1+r
�ҥHr=0.1
0.1*100%
r=10% [/quote]
��......��part a����k��

2007-12-29 11:58 ���y

�^�_ #31 m11 �����l



�ڥ��N�O�o�˰�= -

2007-12-29 12:00 �P��
[quote]�쩫�� [i]���y[/i] �� 2007-12-29 11:58 �o��
�ڥ��N�O�o�˰�= - [/quote]
��ꤣ�γ]x�]�i�H����....

2007-12-29 12:01 ���y

�^�_ #34 �P�� �����l



���A������Y2������
�A�N�o�{�n�o�˰�

2007-12-29 12:43 �P��
[quote]�쩫�� [i]���y[/i] �� 2007-12-29 12:01 �o��
���A������Y2������
�A�N�o�{�n�o�˰� [/quote]
= =�j������.........
�ڰ����Ʀ��Px�������Ϊ�
��ƴN�����D........
�b���������D���ӬO�W����
= =�g�X�Ӯ��O�ɶ�

[[i] �����̫�� �P�� �� 2007-12-29 12:49 �s�� [/i]]

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