does any1 do a level maths?!?!?

Showing 1 to 11 of 11

could u help me with the core 1 coz i lyk really dont understand anything....nd ma examz in january...pleassee helpppp

Posted: 13-11-12 16:59 by Waqar Khanny :)

I do it but I don't know if I could be much help - what are you stuck with?

Posted: 13-11-12 17:58 by Joanne

sequences and series...hav u done this yet?

Posted: 13-11-12 19:12 by Waqar Khanny :)

No :/ is that in core 1? I've done surds, quadratics, coordinate geometry, differentiation and just started cubics.

Posted: 13-11-12 21:49 by Joanne

yeah it is...ohhh well its ok :P

u cud help me on somefin else tho....

ummm the equation x^2 + 3px + p = 0, where p is a non-zero constant and has equal roots. find the value of p..

Posted: 13-11-12 21:52 by Waqar Khanny :)

What's a non-zero constant?

Posted: 13-11-12 21:55 by Joanne

i dunno tbh :(

Posted: 13-11-12 21:59 by Waqar Khanny :)

It's a value that isn't 0.

To solve you work out the discriminant, which is (3p)^2-4p=0           
You know it equals 0 because when the discriminant equals the graph only has one real root.
Work out the equation which gives 9p^2-4p=0
Factorise p(9p-4)=0
Normally you would get 0 as a value of p but because its told you that p cannot be 0
To get p you re-arrange the equation giving p=4/9 which is your answer.

Hope this helps :)

Posted: 14-11-12 20:23 by Molly

thanx molly ^_^

Posted: 14-11-12 20:41 by Waqar Khanny :)

Post It world wide you might get an answer

Posted: 15-11-12 18:23 by sharaan

ask at school if they have set up an account for you on Integral Maths

It has plenty of stuff on it that should help you learn it.

Posted: 25-11-12 01:34 by Re-Re