Revolution Now!
Welcome,
Guest
. Please
login
or
register
.
Have you missed your
activation email
?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length.
News:
New servers, hooraaaay! More bandwidth, more power.
Home
Help
Calendar
Login
Register
IGCSE/GCSE/O & A Level/IB/University Student Forum
»
Qualification
»
GCE AS & A2 Level
»
Subject Doubts
»
Math
»
p3 problems here.!!!!
« previous
next »
Print
Pages: [
1
]
2
Go Down
Author
Topic: p3 problems here.!!!! (Read 2685 times)
ifraha18
SF Immigrant
Posts: 117
Reputation: 128
p3 problems here.!!!!
«
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?
Logged
astarmathsandphysics
SF Overlord
Posts: 11271
Reputation: 65534
Gender:
Free the exam papers!
Re: p3 problems here.!!!!
«
Reply #1 on:
May 26, 2010, 03:39:17 pm »
ln4=2ln2
so do ln2-2ln2+1 =1-ln2
Logged
ifraha18
SF Immigrant
Posts: 117
Reputation: 128
Re: p3 problems here.!!!!
«
Reply #2 on:
May 26, 2010, 03:48:11 pm »
thnku am so dumb..
Logged
ifraha18
SF Immigrant
Posts: 117
Reputation: 128
Re: p3 problems here.!!!!
«
Reply #3 on:
May 27, 2010, 01:41:11 am »
may june 2008 q2...
Logged
ifraha18
SF Immigrant
Posts: 117
Reputation: 128
Re: p3 problems here.!!!!
«
Reply #4 on:
May 27, 2010, 03:51:01 am »
june 2008 q9 part 2 how do we get the _1/2 limit?
?
Logged
preity
Newbie
Posts: 39
Reputation: 43
Re: p3 problems here.!!!!
«
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....
Logged
astarmathsandphysics
SF Overlord
Posts: 11271
Reputation: 65534
Gender:
Free the exam papers!
Re: p3 problems here.!!!!
«
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
Logged
astarmathsandphysics
SF Overlord
Posts: 11271
Reputation: 65534
Gender:
Free the exam papers!
Re: p3 problems here.!!!!
«
Reply #7 on:
May 27, 2010, 08:00:28 am »
summer 08 qp3 q9
Logged
astarmathsandphysics
SF Overlord
Posts: 11271
Reputation: 65534
Gender:
Free the exam papers!
Re: p3 problems here.!!!!
«
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
Logged
astarmathsandphysics
SF Overlord
Posts: 11271
Reputation: 65534
Gender:
Free the exam papers!
Re: p3 problems here.!!!!
«
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....
Logged
ifraha18
SF Immigrant
Posts: 117
Reputation: 128
Re: p3 problems here.!!!!
«
Reply #10 on:
May 27, 2010, 09:16:48 am »
thnkuu soo much!!!
Logged
astarmathsandphysics
SF Overlord
Posts: 11271
Reputation: 65534
Gender:
Free the exam papers!
Re: p3 problems here.!!!!
«
Reply #11 on:
May 27, 2010, 09:30:16 am »
no probs
Logged
ifraha18
SF Immigrant
Posts: 117
Reputation: 128
Re: p3 problems here.!!!!
«
Reply #12 on:
May 27, 2010, 03:02:43 pm »
q10 part 1..june 2009
Logged
pastyear
SF Citizen
Posts: 209
Reputation: 313
Gender:
Re: p3 problems here.!!!!
«
Reply #13 on:
May 27, 2010, 03:14:51 pm »
use differentiation as it is the maximum point.
Then = it to zero
Logged
ifraha18
SF Immigrant
Posts: 117
Reputation: 128
Re: p3 problems here.!!!!
«
Reply #14 on:
May 27, 2010, 03:30:28 pm »
i used it but i dont get the point acurately
Logged
Print
Pages: [
1
]
2
Go Up
« previous
next »
IGCSE/GCSE/O & A Level/IB/University Student Forum
»
Qualification
»
GCE AS & A2 Level
»
Subject Doubts
»
Math
»
p3 problems here.!!!!