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Forum: SPM & STPM 02-08-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

(1 - y/x) / (1/y + lnx) = (xy-y^2) / (x + xy lnx)

But, my confusion is....
How we got that answer (xy-y^2) / (x + xy lnx)
i have tried in many ways, but still can't find how to got them......
Forum: SPM & STPM 22-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

So, now.. who is quick? nicodemus or wolframalpha? hahaha
Forum: SPM & STPM 22-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

amazing.. this method is too quick.. thanks..http://www.recom.org/forum/images/icons/icon10.gif
but a little bit difficult to understand.. hahaha
Forum: SPM & STPM 22-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

Next tough question... (4 me now) hehehe

Diffrentiate this.. (chain rule)

(2x-3)^2/(3x+4)^3
Forum: SPM & STPM 22-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

no.. its not my homework. it's my personal exercise actually.. :)
Forum: SPM & STPM 22-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

Agreed with lawteoh.. keep it up nicodemus and stay alive with this thread to help me ... :p
Forum: SPM & STPM 22-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

Look like the answer in pelangi book is wrong.......

Edited... no, im wrong.. look like post zekrypton play important role in this case.. hahahha
Forum: SPM & STPM 22-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

my bad.. pardon me... hihihi http://www.recom.org/forum/images/icons/icon10.gif
i'll checkout your answer soon when i reach this question.. :P
now, i need to understand the easy question before...
Forum: SPM & STPM 22-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

nice try bro.. but it is not the correct answer ..

the answer is -[1/[2(1/2pai-1)^3/2]] hehehehe

now, i think you can give me the correct solution......
Forum: SPM & STPM 22-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

ok then,

if y = 1/[(x-1)^1/2]sinx , find dy/dx when x=n/2 .. n is pai... got it? hehehe
Forum: SPM & STPM 22-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

yes. u are right.. http://www.recom.org/forum/images/icons/icon10.gif dy/du x du/dx = chain rule ..

then, the next question i think.. :p
Forum: SPM & STPM 22-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

Nice one bro.. http://www.recom.org/forum/images/icons/icon10.gif where are u study now?
chain rule? i thought maybe it is the new rule to make it look...
Forum: SPM & STPM 21-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

the answer is 2 cot 2x... :cry ive got headhache to think the right solution..http://www.recom.org/forum/images/icons/icon9.gif

My steps :

y = ln u so, dy/du = 1/u
u = sinx cos x so, du/dx =...
Forum: SPM & STPM 21-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

thanks.. got idea at your steps but its not final answer actually..
actually, i have the answer but not the solution.. :amuse

sooo soorry .. im forgot to tell you all to use chain rule.. edited..
Forum: SPM & STPM 21-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Re: Help me to solve these questions.. Mathematics T 1

nope.. but if you dont mind, you can post your solution for my question..
and then, we all can disscuss it..
i've got stuck to solve it.. thanks

sorry 4 my bad language..
Forum: SPM & STPM 21-06-2009
Replies: 34
Views: 7,826
Posted By uchiha_itachi
Cool Help me to solve these questions.. Mathematics T 1

Hi all,i need yours help to solve my unsolved questions on math t 1.. :P :):):)

Diffrentiate each of the following functions with respect to x. [use chain rule]
1.) ln(sin x cos x)

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