Author Topic: Maths & Physics Help  (Read 59965 times)

Offline sweetsh

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Re: Maths & Physics Help
« Reply #180 on: April 26, 2009, 07:52:14 pm »
Astar I just want to check if "Charles' Law" is included in the IGCSE syllabus

Offline astarmathsandphysics

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Re: Maths & Physics Help
« Reply #181 on: April 26, 2009, 08:49:04 pm »
I am sure it is because someone posted a question on it.

Offline cockyxrocker

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Re: Maths & Physics Help
« Reply #182 on: April 27, 2009, 06:02:16 am »
Quote
my friend has some notes 4 these topics .. i'll try to get them for u asap.. dont worry
thanks for helpin '
though i need them asap

Offline twilight

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Re: Maths & Physics Help
« Reply #183 on: April 27, 2009, 09:44:08 am »
ohhhh... my scanner's not working  :-[
but i swear i am trying
Words and hearts should be handled with care
For words mis-spoken and hearts when broken are the hardest things to repair

Offline sweetsh

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Re: Maths & Physics Help
« Reply #184 on: April 27, 2009, 07:40:21 pm »
I hate electromagnetic induction and everything related to magentism

Offline SGVaibhav

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Re: Maths & Physics Help
« Reply #185 on: April 28, 2009, 07:11:50 pm »
need help
this paper
may june 05 paper 4 igcse
http://www.freeexampapers.com/FreeExamPapers.com_.php?__lo=SUdDU0UvTWF0aHMvQ0lFLzIwMDUgSnVuLzA1ODBfczA1X3FwXzQucGRm

Questions
7)a)i     (plz try it out)     answer is 46.5
8)a)         (2 answers====>1 and 3     {HOW?})

plz

Offline sweetsh

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Re: Maths & Physics Help
« Reply #186 on: April 28, 2009, 07:25:08 pm »
ok 7) a) 50/100 *150 =75
you go to 75 on the cumulative column and you draw a line to see how much is the speed.

8)a) f(x) = x2 – 4x + 3
       y=x2 -4x + 3
       y= (x-3) (x-1)
       x=3 or x=1

Offline SGVaibhav

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Re: Maths & Physics Help
« Reply #187 on: April 28, 2009, 07:32:05 pm »
ok

i got same thing for 7a)
but when i did that thing on graph, my answer is completely different.
try it out in ur pc only without printing
that is :@
it is (46.5 in markscheme) how the f***?

in 8a
i understood
but i had one quesiton

when do the thing we did below and when do we actually substitute?
i am little confused with that.

Offline sweetsh

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Re: Maths & Physics Help
« Reply #188 on: April 28, 2009, 07:45:01 pm »
I did it both on pc and on mypaper it was 46.5..make sure you got the point (75) as the scale for the y axis is that 2units for each line so 75 will be between 74 and 76...in addition to the scale on x axis where each line is 0.5 so when you put the line its 46.5

Offline astarmathsandphysics

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Re: Maths & Physics Help
« Reply #189 on: April 28, 2009, 07:52:32 pm »
Thanks Sweetsh. I was teaching maths for a few hours.

Offline sweetsh

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Re: Maths & Physics Help
« Reply #190 on: April 28, 2009, 07:56:59 pm »
No problem. I was practicing too

Offline SGVaibhav

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Re: Maths & Physics Help
« Reply #191 on: April 28, 2009, 08:11:43 pm »
ok let me download another paper.
i think mine is faulty
lol

can u explain me the 8th one
{MINE QUOTE}
in 8a
i understood
but i had one quesiton

when do the thing we did below and when do we actually substitute?
i am little confused with that.


ok the answer is coming right now!
thanx for that one

Offline sweetsh

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Re: Maths & Physics Help
« Reply #192 on: April 28, 2009, 08:12:54 pm »
Sorry but I didnt get your question?

Offline SGVaibhav

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Re: Maths & Physics Help
« Reply #193 on: April 28, 2009, 08:19:05 pm »
ok 7) a) 50/100 *150 =75
you go to 75 on the cumulative column and you draw a line to see how much is the speed.

8)a) f(x) = x2 – 4x + 3
       y=x2 -4x + 3
       y= (x-3) (x-1)
       x=3 or x=1

ugh

i cant explain it
i understood.
i cant express my question, but i know the right thing now

it is very hard to explain over here.
i rubbed the whole thing 5 times and wrote it again.


THANK YOU FOR HELP
 :D

Offline SGVaibhav

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Re: Maths & Physics Help
« Reply #194 on: April 30, 2009, 04:50:44 pm »
this is for igcse students

in maths
while doing a question, how much DP or SF do we use?
and we write our answers to how much SF or DP?
because this has been ruining my accuracy.