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

Qualification => Subject Doubts => IGCSE/ GCSE => Math => Topic started by: vids on May 16, 2009, 07:01:25 am

Title: maths p4
Post by: vids on May 16, 2009, 07:01:25 am

cn sum1 pls help me wit distance-time graphs. ???

Title: Re: maths p4
Post by: Q80BOY on May 16, 2009, 07:04:01 am

Distant/Time Graphs

Axis:
x = time
y = distance

Straight Line:
up or down = constant speed

Horizontal Line:
no movement

Gradient:
speed

hope this helps  ;)

Title: Re: maths p4
Post by: vids on May 16, 2009, 07:06:13 am

Thanks

Title: Re: maths p4
Post by: Q80BOY on May 16, 2009, 07:16:17 am

Quote from: vids on May 16, 2009, 07:07:20 am

is there a metod to find a matrix for rotaton or reflection ode than  simultaneous??????

the matrix for reflection in line y=x is 0 1
                                                  1 0

the matrix for refection in line y=-x is 0 -1
                                                  -1 0

the matrix for clockwise rotation of 90 degrees about the origin is 0 1
                                                                                       -1 0

the matrix for anticlockwise rotation of 90 degrees about the origin is 0 -1
                                                                                             1  0

and u can use the formula method instead of the simultaneous method

Title: Re: maths p4
Post by: Ukhti-R on May 16, 2009, 07:18:22 am

wots the formula method ?

Title: Re: maths p4
Post by: Q80BOY on May 16, 2009, 07:27:01 am

Quote from: Roxy on May 16, 2009, 07:18:22 am

wots the formula method ?

i scanned the formula method, but its upside down  :P so u have to rotate it or something lol

Title: Re: maths p4
Post by: vids on May 16, 2009, 07:30:35 am

cn sum1 gimme d answers for nov 01 maths p4 q4
please

Title: Re: maths p4
Post by: Q80BOY on May 16, 2009, 07:34:35 am

Quote from: vids on May 16, 2009, 07:30:35 am

cn sum1 imme d answers for nov 01 maths p4 q4
please

i attached it  ;)

Title: Re: maths p4
Post by: vids on May 16, 2009, 07:36:01 am

Thanks a lot

Title: Re: maths p4
Post by: Q80BOY on May 16, 2009, 07:45:02 am

Quote from: vids on May 16, 2009, 07:36:01 am

Thanks a lot

ur welcome mate

gd luck  ;)

Title: Re: maths p4
Post by: shushuIG on May 16, 2009, 10:09:55 am

Quote from: Q80BOY on May 16, 2009, 07:34:35 am

Quote from: vids on May 16, 2009, 07:30:35 am

cn sum1 imme d answers for nov 01 maths p4 q4
please

i attached it  ;)

can anyone plzz help me and attatch june 2001 paper4 markscheme ....itll be highly appreciated.

Title: Re: maths p4
Post by: Q80BOY on May 16, 2009, 10:11:56 am

Quote from: shushuIG on May 16, 2009, 10:09:55 am

Quote from: Q80BOY on May 16, 2009, 07:34:35 am

Quote from: vids on May 16, 2009, 07:30:35 am

cn sum1 imme d answers for nov 01 maths p4 q4
please

i attached it  ;)

can anyone plzz help me and attatch june 2001 paper4 markscheme ....itll be highly appreciated.

here u go  ;D

Title: Re: maths p4
Post by: janefox009 on May 17, 2009, 04:27:37 pm

Q80BOY, the file Mark scheme Paper 4 June 01.pdf you have attached is actually a mark scheme for november01.
can you please attach the june one? thank you in advance :)