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2012-9-9 20:30 Justice

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1, 2(ln3)(ln3)

2, 1/6
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3, [u]594-50(5)[/u]
         30

[[i] �����̫�� Justice �� 2012-9-9 21:01 �s�� [/i]]

2012-9-9 20:39 kimwong3252000
�������n���H�u��U method����

2012-9-9 21:00 UniCorn
������u sub �|��²��...

2012-9-9 21:01 kimwong3252000
Question 1:

Sub 1/x => d(ln x)

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2012-9-9 21:07 Justice
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�Ĥ@�D�ڭp��4(ln3)(ln3)

2012-9-9 21:09 kimwong3252000
[quote]�쩫�� [i]Justice[/i] �� 2012-9-9 21:07 �o��
�]u�ڤϦӤ����A�ӥB�Ӯ��O�ɶ�

�Ĥ@�D�ڭp��4(ln3)(ln3) [/quote]
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�A���� 4 ln x d(ln x)

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2012-9-9 21:10 UniCorn
[quote]�쩫�� [i]kimwong3252000[/i] �� 2012-9-9 09:01 PM �o��
Question 1:

Sub 1/x => d(ln x)

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�o���N�O u sub - -
[quote]�쩫�� [i]Justice[/i] �� 2012-9-9 09:07 PM �o��
�]u�ڤϦӤ����A�ӥB�Ӯ��O�ɶ�

�Ĥ@�D�ڭp��4(ln3)(ln3) [/quote]
��ӥu�O�A����...���O����� - -
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2012-9-9 21:13 kimwong3252000
[quote]�쩫�� [i]UniCorn[/i] �� 2012-9-9 21:10 �o��

�o���N�O u sub - -

��ӥu�O�A����...���O����� - -
�~�o��...�ڥ��ܺ���� u sub ���䦳��k�p�� - - [/quote]
u sub�Y�n�A�g�h�B, �ڦa�ӧrsir�ܫY�O�Ӥ��O, �ڦӮa�Y�����g�X��

�p�G�Yu sub�Y�ݼg==> let u=ln x, then du=1/x dx

�O�ӨҤl�έ���u���o��, ���Y2�P3���ܥ��n�@, ���Yı�ou method�|����, �n�ڴN�ݭp�ڭp����

2012-9-9 21:20 UniCorn
[quote]�쩫�� [i]kimwong3252000[/i] �� 2012-9-9 09:13 PM �o��

u sub�Y�n�A�g�h�B, �ڦa�ӧrsir�ܫY�O�Ӥ��O, �ڦӮa�Y�����g�X��

�p�G�Yu sub�Y�ݼg==> let u=ln x, then du=1/x dx

�O�ӨҤl�έ���u���o��, ���Y2�P3���ܥ��n�@, ���Yı�ou method�|����, �n�ڴN ... [/quote]
�����O�� - -?�u�O�gu��S�gu�a - -

�� 4u du

�� 4(lnx) d(lnx)

2012-9-9 21:22 kimwong3252000
[quote]�쩫�� [i]UniCorn[/i] �� 2012-9-9 21:20 �o��

�����O�� - -?�u�O�gu��S�gu�a - -

�� 4u du

�� 4(lnx) d(lnx) [/quote]
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(�n�F�Y�a����)�o�u�O�]�����D��²��, �p�G��2�D�A�I���n�g��u�X���ձ�?

2012-9-9 21:33 UniCorn
[quote]�쩫�� [i]kimwong3252000[/i] �� 2012-9-9 09:22 PM �o��

�ڴN�O�����@�B�����O�ڰڰڰڰڰڰ�

(�n�F�Y�a����)�o�u�O�]�����D��²��, �p�G��2�D�A�I���n�g��u�X���ձ�? [/quote]
u sub�u�O�@�Ӥ�k
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2012-9-9 21:54 Justice
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[[i] �����̫�� Justice �� 2012-9-9 22:08 �s�� [/i]]

2012-9-9 22:16 kimwong3252000
[quote]�쩫�� [i]Justice[/i] �� 2012-9-9 21:54 �o��
�N�O�����լ�ԣ���]u�N�p����A

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... [/quote]
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[[i] �����̫�� kimwong3252000 �� 2012-9-9 22:17 �s�� [/i]]

2012-9-9 22:19 UniCorn
[quote]�쩫�� [i]Justice[/i] �� 2012-9-9 09:54 PM �o��
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... [/quote]
�A���step2 ���h step3 �� = =

2012-9-9 22:20 kimwong3252000
[quote]�쩫�� [i]UniCorn[/i] �� 2012-9-9 22:19 �o��

�A���step2 ���h step3 �� = = [/quote]
�ӥBconcept���~, in���N���|��dx���X�{

2012-9-9 22:22 Justice
[quote]�쩫�� [i]kimwong3252000[/i] �� 2012-9-9 22:16 �o��

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[img]http://i.imgur.com/VmdOy.jpg[/img] [/quote]

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2012-9-9 22:27 kimwong3252000
[quote]�쩫�� [i]Justice[/i] �� 2012-9-9 22:22 �o��


��u�p�ɶ��C�@�����h [/quote]
�p�o���}�o�o, �֫Y�L��, ��M2�Ѱ�ge�@�w���i�H��, ��u method�n�֥X��

�ӥB��u method, �@��̭@�A5 min�I���d�i��, �h�@�����Y2min�j, �n�L�A�֦��Y���իY�}��

2012-9-9 22:31 Justice
[quote]�쩫�� [i]kimwong3252000[/i] �� 2012-9-9 22:27 �o��

�p�o���}�o�o, �֫Y�L��, ��M2�Ѱ�ge�@�w���i�H��, ��u method�n�֥X��

�ӥB��u method, �@��̭@�A5 min�I���d�i��, �h�@�����Y2min�j, �n�L�A�֦��Y���իY�}�� [/quote]

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[[i] �����̫�� Justice �� 2012-9-9 22:33 �s�� [/i]]

2012-9-9 22:33 UniCorn
[quote]�쩫�� [i]kimwong3252000[/i] �� 2012-9-9 10:27 PM �o��

�p�o���}�o�o, �֫Y�L��, ��M2�Ѱ�ge�@�w���i�H��, ��u method�n�֥X��

�ӥB��u method, �@��̭@�A5 min�I���d�i��, �h�@�����Y2min�j, �n�L�A�֦��Y���իY�}�� [/quote]
���Ӯa�O�ӳ��Yu method
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�ҥH�p�G���Y�ƾǦn�n����ij�ΩO��,�]���n����

2012-9-9 22:35 kimwong3252000
[quote]�쩫�� [i]Justice[/i] �� 2012-9-9 22:31 �o��


�����]u�P���]u���O�ӦۦP�@�ӷ���(��ԣ���]u�N�O�p����)�A

�u�O���]u�O���F�X�B�C [/quote]
��ڻ��Y�]���A x(4x+1) ����L������x�ҥH����

[quote]�쩫�� [i]UniCorn[/i] �� 2012-9-9 22:33 �o��

���Ӯa�O�ӳ��Yu method
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�ҥH�p�G���Y�ƾǦn�n����ij�ΩO��,�]���n���� [/quote]
�N�O���F, �򦳭�let u���³��n�j, �p�p�U���|��

2012-9-9 22:48 UniCorn
[quote]�쩫�� [i]Justice[/i] �� 2012-9-9 10:31 PM �o��


�����]u�P���]u���O�ӦۦP�@�ӷ���(��ԣ���]u�N�O�p����)�A

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��3������u sub ������

btw,��2�P��3�����׬O���O���F - -

2012-9-9 22:50 kimwong3252000
[quote]�쩫�� [i]UniCorn[/i] �� 2012-9-9 22:48 �o��

��3������u sub ������

btw,��2�P��3�����׬O���O���F - - [/quote]
��2����, ��3�D�]���\���׵L��²

2012-9-9 22:55 Justice
[quote]�쩫�� [i]UniCorn[/i] �� 2012-9-9 22:48 �o��

��3������u sub ������

btw,��2�P��3�����׬O���O���F - - [/quote]

�ѬO�o�˼g�A

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2012-9-9 22:57 kimwong3252000
[quote]�쩫�� [i]Justice[/i] �� 2012-9-9 22:55 �o��


�ѬO�o�˼g�A

�]u�u�O�n�·СC [/quote]
���Y�ܳ·Щj, �ܤ�let�F����|�p��

�n��trigo�s��prove sin x cos x�����A�A�A, �p���������p����

2012-9-9 23:18 UniCorn
1,2
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3
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2012-9-10 00:21 louislee2815
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2012-9-10 20:47 Justice
[quote]�쩫�� [i]louislee2815[/i] �� 2012-9-10 00:21 �o��
��ĵ�ݮt�а� [/quote]

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