A/L math p6 chem help

[AnuradhaRa]

කිරියෙ ඉන්න වැඩ කාරයො තමයි ඉතිං මෙයාල
@IndrajithGamage @imhotep @pdn.ac.lk @NEMISIS

 

[dilann]

View attachment 236462
47 ගාන හදන හැටි කියහන්

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@dilann
------ Post added on Sep 7, 2024 at 6:42 PM

මේක හරිද දැන් ?

 

[AnuradhaRa]

මේක හරිද දැන් ?

දේශපාලනේ කරන්න ගිහින් දැං බිසි නේද...

 

[dilann]

දේශපාලනේ කරන්න ගිහින් දැං බිසි නේද...

මම වැඩිය කිරියට ආවෙත් නෑ මේ ටිකේ .

 

[imhotep]

මේක හරිද දැන් ?

No... I did it in the standard way. But as per the post by pdn above, it's not what's expected. So these days if you work out as I said you will not get the marks as the stupid marking scheme is different even though the problem is solved. Because it says to use "repeated use of the remainder theorem"

 

[dilann]

No... I did it in the standard way. But as per the post by pdn above, it's not what's expected. So these days if you work out as I said you will not get the marks as the stupid marking scheme is different even though the problem is solved. Because it says to use "repeated use of the remainder theorem"

මෙහෙම එකක් මූ ට කලින් හදල දුන්නා වගෙත් මතකයි . .

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No... I did it in the standard way. But as per the post by pdn above, it's not what's expected. So these days if you work out as I said you will not get the marks as the stupid marking scheme is different even though the problem is solved. Because it says to use "repeated use of the remainder theorem"

මෙහෙමද හැදුවේ ??

------ Post added on Sep 12, 2024 at 4:55 PM

 

[imhotep]

මෙහෙම එකක් මූ ට කලින් හදල දුන්නා වගෙත් මතකයි . .

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මෙහෙමද හැදුවේ ??

------ Post added on Sep 12, 2024 at 4:55 PM

Thanks. No... becuase after the first step I used differential which is the standard way.

The remainder theorem can be extended past the second order to get the when P(x) is a n degree polynomial (n >m) to get the remainder of P(x)/(x-a)^m using the Taylor series easily and when P(x)/(x-x1)(x-x2)(x-x3)....(x-xm) (up to m terms). using matrices consisting of P(x1), P(x2)..... P(xm)
This is beyond the scope of A/L maths.

 

[07sanjeewakaru]

View attachment 236462
47 ගාන හදන හැටි කියහන්

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@dilann
------ Post added on Sep 7, 2024 at 6:42 PM

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No... I did it in the standard way. But as per the post by pdn above, it's not what's expected. So these days if you work out as I said you will not get the marks as the stupid marking scheme is different even though the problem is solved. Because it says to use "repeated use of the remainder theorem"

Some try to do AL maths in SL by memorising marking schemes..And they astonishingly get through the exam by doing that which was not the case in few years back..
------ Post added on Sep 12, 2024 at 5:41 PM

 

[imhotep]

View attachment 236790

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Some try to do AL maths in SL by memorising marking schemes..And they astonishingly get through the exam by doing that which was not the case in few years back..
------ Post added on Sep 12, 2024 at 5:41 PM

It shouldn't be the case really if there's another short way. But when the examiner specify the method (eg in this case repeated use of the remainder theorem), then you are constrained. Then it shoud be worded "repeated use of the remainder theorem or otherwise" , leaving the student open for other options.

 

[07sanjeewakaru]

It shouldn't be the case really if there's another short way. But when the examiner specify the method (eg in this case repeated use of the remainder theorem), then you are constrained. Then it shoud be worded "repeated use of the remainder theorem or otherwise" , leaving the student open for other options.

Yes...

 

[pdn.ac.lk]

කිරියෙ ඉන්න වැඩ කාරයො තමයි ඉතිං මෙයාල
@IndrajithGamage @imhotep @pdn.ac.lk @NEMISIS

එහම නෑ, මේකෙ ඉන්න හැමෝම වැඩකාරයො...


හැමෝටම හැමදේම බෑ, ඒත් අඩුම තරමේ මොකක් හරි පුලුවන් සහ ඒ දේ කිරියට වගේම සමාජයටත් වැදගත්

 

[mcwolfe]

ඔච්චර උදව්වක් ඕන නෑ බ්ං ඝාන හදාගන්න විදියක් කියපුවාම ඇති

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View attachment 236790

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Some try to do AL maths in SL by memorising marking schemes..And they astonishingly get through the exam by doing that which was not the case in few years back..
------ Post added on Sep 12, 2024 at 5:41 PM

කොහෙන්ද ඔය බාල කඩදාසි ගන්න තියෙන්නේ කටු වැඩ වලට
------ Post added on Sep 12, 2024 at 8:53 PM

 

[pdn.ac.lk]

Thanks. No... becuase after the first step I used differential which is the standard way.

The remainder theorem can be extended past the second order to get the when P(x) is a n degree polynomial (n >m) to get the remainder of P(x)/(x-a)^m using the Taylor series easily and when P(x)/(x-x1)(x-x2)(x-x3)....(x-xm) (up to m terms). using matrices consisting of P(x1), P(x2)..... P(xm)
This is beyond the scope of A/L maths.

@dilann 's method is the only way to do this without using calculus.

 

[07sanjeewakaru]

ඔච්චර උදව්වක් ඕන නෑ බ්ං ඝාන හදාගන්න විදියක් කියපුවාම ඇති

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කොහෙන්ද ඔය බාල කඩදාසි ගන්න තියෙන්නේ කටු වැඩ වලට
------ Post added on Sep 12, 2024 at 8:53 PM

1kg..300Rs
Kadadasi kada wala thiyanawa..
Bothal paththara kiyanne..

 

[mcwolfe]

1kg..300Rs
Kadadasi kada wala thiyanawa..
Bothal paththara kiyanne..

කොට්ටාව,මහරගම,නුගේගොඩ හරි බලංගොඩ රත්නපුර වගෙ හරි ඔන්ලයින් ගන්න හරි පොට් එකක් නැද්ද mn promate photocopy paper වල හදන්නෙ

 

[07sanjeewakaru]

කොට්ටාව,මහරගම,නුගේගොඩ හරි බලංගොඩ රත්නපුර වගෙ හරි ඔන්ලයින් ගන්න හරි පොට් එකක් නැද්ද mn promate photocopy paper වල හදන්නෙ

Iya yako..kauda oowa nasthi karanne...ade oona Town ekka oya kadadasi kada thiyanawa bn..

 

[mcwolfe]

Iya yako..kauda oowa nasthi karanne...ade oona Town ekka oya kadadasi kada thiyanawa bn..

ගත්ත ගත්ත 2kg ma gatta

 

[AnuradhaRa]

ඔන්න අනුරාධත් බෝම අමාරුවෙන් තටමල තටමල ගාණක් හැදුව. ඔයාල ගණන් දහයක් හදනකොට මම එක ගාණක් හැදුව

@mcwolfe
@imhotep
@07sanjeewakaru
@dilann
@pdn.ac.lk

 

[mcwolfe]

ඔන්න අනුරාධත් බෝම අමාරුවෙන් තටමල තටමල ගාණක් හැදුව. ඔයාල ගණන් දහයක් හදනකොට මම එක ගාණක් හැදුව

@mcwolfe
@imhotep
@07sanjeewakaru
@dilann

එළ

 

[07sanjeewakaru]

ඔන්න අනුරාධත් බෝම අමාරුවෙන් තටමල තටමල ගාණක් හැදුව. ඔයාල ගණන් දහයක් හදනකොට මම එක ගාණක් හැදුව

@mcwolfe
@imhotep
@07sanjeewakaru
@dilann

Pattane yakow..

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View attachment 236919ගත්ත ගත්ත 2kg ma gatta

Keeyada 1kg
------ Post added on Sep 14, 2024 at 8:56 PM