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Author Topic: ALL OCT/NOV PAPER DISCUSSION HERE!  (Read 54454 times)

Offline asdf123

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #180 on: October 29, 2009, 11:12:52 am »
how -10???
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Offline @d!_†oX!©

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #181 on: October 29, 2009, 11:22:31 am »
Quote from: asdf123 on October 29, 2009, 11:12:52 am
how -10???
well i'll have to explain the whole thing???
see i vaguely remember...the eq of the line was y=2x+8
at A y was 0...so putting in the valu e of y as 0..u get x...which was coming out to be -4
den A and B were 9 points away!!
so x at  B become 5
and at B also th y was 0
so u take out c from 0=2(5)+c
this gives u c=-10
u understood???
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Offline Ghost Of Highbury

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #182 on: October 29, 2009, 11:33:34 am »
yea..i did the same thing..

just to make this point clear..

"at A y was 0...so putting in the valu e of y as 0..u get x...which was coming out to be -4
den A and B were 9 points away!!"

if u r unsure abt that

try this formula - a tedious one

sqrt(x+4)^2 = 9

which makes it

x=5

the one above is a cumbersome method to solve for it..just 4 d explanation
« Last Edit: October 29, 2009, 11:35:12 am by | am | »
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Offline @d!_†oX!©

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #183 on: October 29, 2009, 11:35:34 am »
dude can u explain the above formula once again!!
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Offline Ghost Of Highbury

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #184 on: October 29, 2009, 11:37:34 am »
Quote from: @d!_†oX!© on October 29, 2009, 11:35:34 am
dude can u explain the above formula once again!!

sure..its dere for us in add. math

maybe its for maths too..

the distance between 2 points is sqrt((x_2 -x_1)^2 + (y_2 - y_1)^2
« Last Edit: October 29, 2009, 11:52:26 am by | am | »
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Offline @d!_†oX!©

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #185 on: October 29, 2009, 11:40:14 am »
ohh oh yaa
it is there
i just couldn't figure it out when u used it there....
cool....anyways u find it out...it was an easy question...
u know wat one of my friend....he made a whole new graph to find out the answer for this question!!!! lolzz :P :P
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Offline Ghost Of Highbury

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #186 on: October 29, 2009, 11:43:42 am »
Quote from: @d!_†oX!© on October 29, 2009, 11:40:14 am
ohh oh yaa
it is there
i just couldn't figure it out when u used it there....
cool....anyways u find it out...it was an easy question...
u know wat one of my friend....he made a whole new graph to find out the answer for this question!!!! lolzz :P :P

lolz..its k...different approach... By the way..reply to my messages dude!
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Offline astarmathsandphysics

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #187 on: October 29, 2009, 11:48:16 am »
and in 3 dimensions it isd=sqrt((x_2 -x_1)^2 +(y_2 - y_1)^2 +(z_2 -z_1)^2)
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Offline @d!_†oX!©

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #188 on: October 29, 2009, 11:49:28 am »
sir won't it be whole root as well????
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Offline Ghost Of Highbury

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #189 on: October 29, 2009, 11:50:03 am »
Quote from: @d!_†oX!© on October 29, 2009, 11:49:28 am
sir won't it be whole root as well????


it is the whole root
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Offline @d!_†oX!©

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #190 on: October 29, 2009, 11:53:54 am »
ohh well actually he might have edited it now....
earlier the original post had it without the whole root so i confirmed..
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Alpha

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #191 on: October 29, 2009, 12:14:01 pm »
Quote from: | am | on October 29, 2009, 11:37:34 am
sure..its dere for us in add. math

maybe its for maths too..

the distance between 2 points is sqrt((x2 -x1)^2 + (y2 - y1)^2


Use the graphical method...
It's the Pythagoras' Theorem.

Draw any inclined line on a Cartesian Plane.

I have attached a file to this post. Refer to it.

Let A (x, y) and B(x1, y1).

To find the distance between A and B, i.e, the bold black inclined line, you will need to find the length of the two red dotted lines I have named x and y.

Using Pythagoras' Theorem,

Square of longest side = Sum of squares of the two smallest sides.

Send square to the other side...

>>> Longest side=  Sq. root of the sum.

And to find the two smallest sides:

        x = 3 - 0 [y1 - y]

        y = 3 - 0 [x1 - x]

Note that the triangle formed is a right-angled one.

And now substituting the values for x and y, you will come back to the distance formula given.

Actually, this formula is just another way of using the Pythagoras' Theorem.

Am sorry, my explanation is quick... I have exams... If you want, I can be more explicit after the exams...LOL

Good Luck!  :)
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Offline thepokerpro

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #192 on: October 29, 2009, 12:24:18 pm »
So i finished..

Bio-paper 6

I.T- all papers

Math-paper 2

Eng-all papers

French-paper 1 , paper 3 and paper 4

How did you guys do in these papers....What did you think about them??...

I thought I.T paper 1 was of a much higher level than the past 3 years..I still did good.. :) :)

English paper 3 i thought was quite hard...i just managed to finish in time.. :-\ :-\

tell me what u thought about these papers.....PM me if u want to discuss about them! ;D ;D ;D!)

P.S: Dont give out any information about the papers!!!!! :o :o :o :o
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B4 i took I.G.C.S.E i knew how to do math without calculators..( :

Alpha

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #193 on: October 29, 2009, 12:37:03 pm »
Quote from: thepokerpro on October 29, 2009, 12:24:18 pm
So i finished..

Bio-paper 6

I.T- all papers

Math-paper 2

Eng-all papers

French-paper 1 , paper 3 and paper 4

How did you guys do in these papers....What did you think about them??...

I thought I.T paper 1 was of a much higher level than the past 3 years..I still did good.. :) :)

English paper 3 i thought was quite hard...i just managed to finish in time.. :-\ :-\

tell me what u thought about these papers.....PM me if u want to discuss about them! ;D ;D ;D!)

P.S: Dont give out any information about the papers!!!!! :o :o :o :o


English Paper 3?

We have only two papers here (which are over, which means am not cheating. :))... And Oral.... Do you mean Oral? Or is it another paper?
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Offline Sumaiya jackie

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Re: ALL OCT/NOV PAPER DISCUSSION HERE!
« Reply #194 on: October 29, 2009, 12:38:31 pm »
I'm writting Business studies and literature very soon!! HELP!!
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