IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => GCE O - Level => Math => Topic started by: Zain-Xa on September 11, 2009, 07:08:38 pm

Title: Maathss
Post by: Zain-Xa on September 11, 2009, 07:08:38 pm: does any1 have any good practie sites or smth for cie maths :)

helpp would be appreciatted

thaankks :)
Title: Re: Maathss
Post by: Ghost Of Highbury on September 12, 2009, 08:55:47 am: very good site for A level maths

http://www.mathsrevision.net/alevel/pure/
Title: Re: Maathss
Post by: astarmathsandphysics on September 12, 2009, 09:35:52 am: Too good a site. I am writing notes for my site cos i am so jealous.
Title: Re: Maathss
Post by: Ghost Of Highbury on September 12, 2009, 09:53:50 am: Quote from: astarmathsandphysics on September 12, 2009, 09:35:52 am
Too good a site. I am writing notes for my site cos i am so jealous.

thanks!

i know that site is very detailed..
covers all the topics..!!
Title: Re: Maathss
Post by: nid404 on September 12, 2009, 10:05:57 am: I know...good site ;)
Title: Re: Maathss
Post by: T.Q on September 12, 2009, 12:18:08 pm: http://www.s-cool.co.uk/gcse/maths.html

its a good site
Title: Re: Maathss
Post by: Zain-Xa on September 12, 2009, 01:24:56 pm: Thanxx adi nd qalyoubi :)
Title: Re: Maathss
Post by: Zain-Xa on September 12, 2009, 06:23:59 pm: ive gotten one more question ..

find the length of the line segments
and assume P > q > 0

(p + 4q, p-q ) and (p - 3q, p )

plzz answer ASAP :)

thaankkzz
Title: Re: Maathss
Post by: astarmathsandphysics on September 12, 2009, 06:39:26 pm: Quote from: zzZzaaInnYy on September 12, 2009, 06:23:59 pm
ive gotten one more question ..

find the length of the line segments
and assume P > q > 0

(p + 4q, p-q ) and (p - 3q, p )

plzz answer ASAP :)

thaankkzz

A=(p + 4q, p-q ) and B=(p - 3q, p ) so B-A=(-7q,q) Then distance= $sqrt((-7q)^2+q^2)=5q sqrt(2)$
Title: Re: Maathss
Post by: Zain-Xa on September 12, 2009, 06:43:22 pm: um sir the answer which im supposed to get is root 50q² :S
Title: Re: Maathss
Post by: astarmathsandphysics on September 12, 2009, 06:56:25 pm: Shoorly shome mishtake.
Title: Re: Maathss
Post by: Zain-Xa on September 12, 2009, 06:57:47 pm: because its like behind my maths text
yeaa it could b one :\
Title: Re: Maathss
Post by: astarmathsandphysics on September 12, 2009, 06:58:53 pm: I thought it was the length from the first point to the second.
Title: Re: Maathss
Post by: Zain-Xa on September 12, 2009, 07:06:27 pm: its length of the line segments

so tht is different right ?!??! :S
Title: Re: Maathss
Post by: astarmathsandphysics on September 12, 2009, 07:42:41 pm: Are there 2 lines? Both from the origin? Or only one from one point to another? If the second i am sure i was right.
Title: Re: Maathss
Post by: Zain-Xa on September 12, 2009, 07:43:56 pm: there arent any drawings but this is the exact question :

find the length of the line segments joining these pair of points... ?
Title: Re: Maathss
Post by: sweetsh on September 12, 2009, 07:55:31 pm: It should be like this
$sqrt((p-3q-p+4q)^2+(p-p-q)^2)$
= $sqrt((q)^2+(-q)^2$
Title: Re: Maathss
Post by: Zain-Xa on September 12, 2009, 07:56:15 pm: this is wat i did sweetsh unfortunatley im nt getting the answer :S
Title: Re: Maathss
Post by: sweetsh on September 12, 2009, 07:58:48 pm: There might be something wrong with the question or the answer written
Title: Re: Maathss
Post by: Zain-Xa on September 12, 2009, 08:02:22 pm: mm.. maybe :S

anywayz ill check it out in skool tomorrow

and ive got one more question ;D

show the points (1, -2) (6, -1) (9, 3) and (4,2) are vertices of a parallelogram .. :S
Title: Re: Maathss
Post by: astarmathsandphysics on September 12, 2009, 09:11:35 pm: Quote from: zzZzaaInnYy on September 12, 2009, 06:23:59 pm
ive gotten one more question ..

find the length of the line segments
and assume P > q > 0

(p + 4q, p-q ) and (p - 3q, p )

plzz answer ASAP :)

thaankkzz

$sqrt(((p-3q)-(p+4q))^2+((p)-(p-q))^2)=sqrt((p-3q-p-4q)^2+(p-p+q)^2)=sqrt((-7q)^2+q^2)=sqrt(50q^2)=5q sqrt(2)$