# help needed urgently....a level maths!!! differentiation

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1) a curve is given by the equation y=3x^2 + 3 + 1/x^2 where x>0. at the points A,B AND C on the curve x=1,2 and 3 respectivley. find the gradients at A, B and C.

cud u please explain how u did it..thnx ^_^

Posted: 20-11-12 19:35 by Waqar Khanny :)

do you not just substitute it into y=mx+c?

OR let x be 1 and then substitute it in

or let y be 1 and substitute it in?

Posted: 20-11-12 19:42 by XXD!

im not sure :(

Posted: 20-11-12 19:44 by Waqar Khanny :)

what exam board r u doin

im still doin GCSE

Posted: 20-11-12 19:46 by XXD!

im doin edexcel

Posted: 20-11-12 19:47 by Waqar Khanny :)

same , im doin 2 maths GCSE's and an AS in additional maths

Posted: 20-11-12 19:48 by XXD!

how u findin ur as??

Posted: 20-11-12 19:51 by Waqar Khanny :)

hard cuz im in yr 10 and dey expect sooo much

my school in general expects soo much

if u dont do gud dey baisically kill u

too much man

Posted: 20-11-12 19:54 by XXD!

lol...ohh welll hope u doo guud innit XDD

lool..haha ik XXDD

btw do u knw aliimz u remind me off her..da way u tlk/type LOL ^_^

Posted: 20-11-12 19:56 by Waqar Khanny :)

yeh i used 2 cum on here ages ago nd used 2 tlk 2 her den

wat reminds me of her? :)

Posted: 20-11-12 19:58 by XXD!

except de typing obvs

Posted: 20-11-12 19:59 by XXD!

lol ^_^

just in general..da way she tlks.. XDD datz kinda pretty much it coz i hav neva tlked 2 u b4 soo i wunt knw wat else yet...XDD

Posted: 20-11-12 20:02 by Waqar Khanny :)

k.....

dats all i hav 2 say......

i shud be doin work knkow but somehow came on this and listening 2 music......

skool can f off

Posted: 20-11-12 20:04 by XXD!

LOL xD

lool..i hav 2 wrk anall :P

lol..yep anova thing lol u swear..reminds me of her LMAO

Posted: 20-11-12 20:06 by Waqar Khanny :)

"anall" wots dat mean........ ;)

nd i swear all de tym

Posted: 20-11-12 20:09 by XXD!

lool hmmm haha "aswell" XDD

lol..yeah it iz a bad habit.. XDD

Posted: 20-11-12 20:10 by Waqar Khanny :)

i try to stop but it cums soo naturally

bit random... but wots youre fave song evaaa?

Posted: 20-11-12 20:12 by XXD!

lol....welll giv it tym innih HAHA LOL XDD

lol..ermmm id say arminder gill yaarian---->> asian ^_^ wbu?

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

uhhhh... its gotta be emeli sande read all about it part III.

C im **** myself nd dont listen 2 any asian music...... moslty cuz i cant understand what they sayin :/

Posted: 20-11-12 20:16 by XXD!

lol..dnt lyk dat :D

lool..im not exactly **** im pataan/**** lool XDD buhh yeah i lyk it way betta dan da english trackz...XDD

lool...ur **** u shud do XDD

Posted: 20-11-12 20:21 by Waqar Khanny :)

i shud do but love my english music 2

i dont really understand my own laguage

i prefer english music cuz ......... i just do....

Posted: 20-11-12 20:24 by XXD!

im not quite fond of english tbh... XDD

lol...hmm do u?? haha ^_^

Posted: 20-11-12 20:25 by Waqar Khanny :)

do you wot...

Posted: 20-11-12 20:28 by XXD!

looooooooooll prefer english HAHA...................LOL

ermmm im startin 2 wonder iz dey sommat wrng wiv u?? LMAO

Posted: 20-11-12 20:29 by Waqar Khanny :)

dats nice.... im offended

.... yeah deyre probably is.....

...nd i prefer ebglish cuz i can actually understand it and sum of de musuc sounds amazing...

lyk read all about it part III.. c im gonna learn dat on the piano

Posted: 20-11-12 20:35 by XXD!