Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    2
    ReputationRep:
    Name:  20171017_204434.jpg
Views: 10
Size:  503.9 KB

    Can you tell me your answers for these questions, am sure book answers are wrong
    • Thread Starter
    Offline

    2
    ReputationRep:
    Book answers are 9, 5, 1, 13, 15, 3.5
    • Community Assistant
    • Welcome Squad
    Offline

    20
    ReputationRep:
    (Original post by chilli17)
    Book answers are 9, 5, 1, 13, 15, 3.5
    How about you have a go, show us what your work, then explain why you're sure the book's answers are wrong?
    • Thread Starter
    Offline

    2
    ReputationRep:
    Name:  20171017_211326.jpg
Views: 12
Size:  499.9 KB

    Don't you just add the vector numbers on to x, y coordinates.?
    • Community Assistant
    • Welcome Squad
    Offline

    20
    ReputationRep:
    (Original post by chilli17)

    Don't you just add the vector numbers on to x, y coordinates.?
    No.

    For no. 3 for example, the translation vector is [2,0] which means y=f(x) \mapsto y=f(x-2)

    Plugging x=3 then gives y=f(1)=1
    • Thread Starter
    Offline

    2
    ReputationRep:
    OK getting there correct answers now

    Using the formula y - s = f(x - t) [t/s]

    Is there a YouTube video with this type of question am home studying
    • Community Assistant
    • Welcome Squad
    Offline

    20
    ReputationRep:
    (Original post by chilli17)
    OK getting there correct answers now

    Using the formula y - s = f(x - t) [t/s]

    Is there a YouTube video with this type of question am home studying
    A bunch of them, but here's one I randomly plucked out:

    • Thread Starter
    Offline

    2
    ReputationRep:
    Next question I get wrong answer to part 3

    Name:  20171018_045637.jpg
Views: 11
Size:  353.3 KB
    • Community Assistant
    • Welcome Squad
    Offline

    20
    ReputationRep:
    (Original post by chilli17)
    Next question I get wrong answer to part 3
    That means 3x gets mapped onto 3(x-b) since x \mapsto (x-b) from that translation.

    Now since 3x-3=3(x-b), you can easily find b if it's not obvious from inspection.
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Will you be richer or poorer than your parents?
    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
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • 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

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