Turn on thread page Beta
    • Thread Starter
    Offline

    0
    ReputationRep:
    Hi could somebody help me with 6a and 6b. Thanks Name:  ImageUploadedByStudent Room1477608155.056063.jpg
Views: 27
Size:  18.6 KB


    Posted from TSR Mobile
    Offline

    12
    ReputationRep:
    What have you tried so far.
    • Thread Starter
    Offline

    0
    ReputationRep:
    Ok so I'v worked out the x and y intercepts. It's just the turning point I need advice with now for a and I'm stuck on b


    Posted from TSR Mobile
    Offline

    12
    ReputationRep:
    Remember that the curve is symmetrical for a quadratic. Does that help you find the x coordinate of the turning point, considering you already know the roots?
    • Thread Starter
    Offline

    0
    ReputationRep:
    So would this find me the x coordinate of the turning but how would I find y. Do I use the completing the square method?


    Posted from TSR Mobile
    Offline

    15
    ReputationRep:
    (Original post by TSRralph)
    So would this find me the x coordinate of the turning but how would I find y. Do I use the completing the square method?


    Posted from TSR Mobile
    Yes complete the square. Or you could differentiate to find the x coordinates of the turning point and then use that to find they coordinate but complete the square I'd say.
    Offline

    12
    ReputationRep:
    Well no you would simply sub in the X value you have found to find y
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: October 28, 2016
The home of Results and Clearing

2,389

people online now

1,567,000

students helped last year

University open days

  1. Keele University
    General Open Day Undergraduate
    Sun, 19 Aug '18
  2. University of Melbourne
    Open Day Undergraduate
    Sun, 19 Aug '18
  3. Sheffield Hallam University
    City Campus Undergraduate
    Tue, 21 Aug '18
Poll
A-level students - how do you feel about your results?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

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.