Turn on thread page Beta
    Offline

    11
    ReputationRep:
    (Original post by Mr rump)
    What did people get for 4b? I think I had 21/2 and -9/2? As x-3=+ or - 15/2
    I got that too.
    Offline

    1
    ReputationRep:
    Hmmm why did you put 15/2?
    Offline

    3
    ReputationRep:
    i got the 21/2 but literally just as i figured that out it was time up so couldnt do the negative
    Offline

    3
    ReputationRep:
    for tanaBc I got lengthAC/LengthAB ??? anyone else get anythng like that
    Offline

    2
    ReputationRep:
    I got Length DC/DB, because DC is perpendicular to AB and therefore makes a right angle, but there was no guarantee that AC was perpendicular to AB.
    Offline

    3
    ReputationRep:
    yeah i literally just took a guess :/
    Offline

    1
    ReputationRep:
    (Original post by VeepFan)
    for tanaBc I got lengthAC/LengthAB ??? anyone else get anythng like that
    Yeah I am almost certain I got that too
    Offline

    3
    ReputationRep:
    i cant even remember calculating D

    everything went so badly
    Offline

    2
    ReputationRep:
    (Original post by wellwhatcanisay)
    Yeah I am almost certain I got that too
    yes that's correct. but i didn't know how to simplify my final answer .
    Offline

    3
    ReputationRep:
    wasnt it something like, take the roots down to as low as they can go and then they cancel or something?
    Offline

    1
    ReputationRep:
    (Original post by goodies)
    yes that's correct. but i didn't know how to simplify my final answer .
    Thanks for the reassurance ! And I think I simplified it to 1 over the square root of two
    Offline

    3
    ReputationRep:
    x=40 for the stationary points riddle?, i mean 'question'
    Offline

    2
    ReputationRep:
    Yup I got x=40 too. I thought the question was alright! Makes a nice change from the usual C1 questions
    Offline

    0
    ReputationRep:
    I got tan=1/2
    Offline

    2
    ReputationRep:
    I had x=40 and put it back into the L equation to get L=80 is that correct? Or was I just meant to leave it after solving X
    Offline

    2
    ReputationRep:
    (Original post by wellwhatcanisay)
    Yeah I am almost certain I got that too
    I had root 20 over root 90 but I simplified it wrong! But think that is ac/ab
    Offline

    3
    ReputationRep:
    i think it is yeah, i just forgot :/// i know you had to do d^2L/dx^2 to show X>0 tf minimum
    Offline

    2
    ReputationRep:
    (Original post by blubba)
    I got tan=1/2
    Same here.
    Offline

    3
    ReputationRep:
    and then on that weird binomial, i had n=5 and a=-3/2 ?
    Offline

    0
    ReputationRep:
    what were the ranges for q5? for the one where you needed to find the range of no real root values?
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: August 12, 2015

3,179

students online now

800,000+

Exam discussions

Find your exam discussion here

Poll
Should predicted grades be removed from the uni application process

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.