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

Qualification => Subject Doubts => GCE AS & A2 Level => Math => Topic started by: RTB on December 16, 2010, 01:37:03 pm

Title: A level maths help needed
Post by: RTB on December 16, 2010, 01:37:03 pm: does anyone noe how 2 do q7 p2 9709 integration question
Title: Re: A level maths help needed
Post by: Freaked12 on December 16, 2010, 02:04:44 pm: which year?
Title: Re: A level maths help needed
Post by: RTB on December 16, 2010, 02:39:08 pm: nov 2001 n i even have more doubts but after i understand this i will go ahead
Title: Re: A level maths help needed
Post by: RTB on December 16, 2010, 03:16:35 pm: i have another doubt in june 2002 P2 q4iii) 6)
Title: Re: A level maths help needed
Post by: Freaked12 on December 17, 2010, 02:57:51 pm: Give me the link to the paper or write down the question.

I cant find paper 2 for mathematics
Title: Re: A level maths help needed
Post by: RTB on December 17, 2010, 05:52:07 pm: http://www.xtremepapers.net/CIE/index.php?dir=International%20A%20And%20AS%20Level/9709%20-%20Mathematics/&file=9709_s02_qp_2.pdf

http://www.xtremepapers.net/CIE/index.php?dir=International%20A%20And%20AS%20Level/9709%20-%20Mathematics/&file=9709_w01_qp_2.pdf
Title: Re: A level maths help needed
Post by: elemis on December 18, 2010, 11:06:40 am: 2 minutes,
Title: Re: A level maths help needed
Post by: elemis on December 18, 2010, 11:10:55 am: $\frac{dy}{dx} = -3sinx +2cosx$

$2cosx = 3sinx$

Remember that $\frac{sinx}{cosx} = tanx$

Hence, $\frac{2}{3}=tanx$

tan^-12/3 = 33.7 = x coordinate

Plugging 33.7 into original equation :

3*cos*33.7 + 2*sin*33.7 = 3.61 = y coordinate