Author Topic: p3 problems here.!!!! (Read 2697 times)

ifraha18 · « **on:** May 26, 2010, 03:29:29 pm »

june 2002 question 6 part 2...i cant get the final thing

i get stuk here
-ln4+ln2+1

how do u make it 1-ln2?

astarmathsandphysics · « **Reply #1 on:** May 26, 2010, 03:39:17 pm »

ln4=2ln2
so do ln2-2ln2+1 =1-ln2

ifraha18 · « **Reply #2 on:** May 26, 2010, 03:48:11 pm »

thnku am so dumb..

ifraha18 · « **Reply #3 on:** May 27, 2010, 01:41:11 am »

may june 2008 q2...

ifraha18 · « **Reply #4 on:** May 27, 2010, 03:51:01 am »

june 2008 q9 part 2 how do we get the _1/2 limit?

?

preity · « **Reply #5 on:** May 27, 2010, 05:06:23 am »

can someone help me wit these quest...O/N 05 Q7,O/N 06 Q9,M/J 09 Q7...it's all about topic 9....helppppp....

astarmathsandphysics · « **Reply #6 on:** May 27, 2010, 07:47:22 am »

may june 2008 q2...
sub e^x=p to get p+p^=p^3 and subtract p+p^2 to get p^3-p^2-p=0
factorise p(p^2-p-1) now p=0 or solve the quadratic

astarmathsandphysics · « **Reply #7 on:** May 27, 2010, 08:00:28 am »

summer 08 qp3 q9

astarmathsandphysics · « **Reply #8 on:** May 27, 2010, 08:03:04 am »

to get -1/2 limit solve e^-x(1+2x)=0
1+2x=0 since exponentials are never 0 so x=-1/2

astarmathsandphysics · « **Reply #9 on:** May 27, 2010, 08:22:37 am »

can someone help me wit these quest...O/N 05 Q7,O/N 06 Q9,M/J 09 Q7...it's all about topic 9....helppppp....

ifraha18 · « **Reply #10 on:** May 27, 2010, 09:16:48 am »

thnkuu soo much!!!

astarmathsandphysics · « **Reply #11 on:** May 27, 2010, 09:30:16 am »

no probs

ifraha18 · « **Reply #12 on:** May 27, 2010, 03:02:43 pm »

q10 part 1..june 2009

pastyear · « **Reply #13 on:** May 27, 2010, 03:14:51 pm »

use differentiation as it is the maximum point.
Then = it to zero

ifraha18 · « **Reply #14 on:** May 27, 2010, 03:30:28 pm »

i used it but i dont get the point acurately

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