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Edexcel Maths Calculator

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    Can someone explain to me how you find the minimum and maximum point/value in a graph?
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    (Original post by FLAKS)
    Can someone explain to me how you find the minimum and maximum point/value in a graph?
    There are various ways

    Are you studying GCSE or A Level
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    GCSE, I'm not sure how to do it, I don't know if its as simple as just looking for the minimum value of Y..
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    (Original post by FLAKS)
    GCSE, I'm not sure how to do it, I don't know if its as simple as just looking for the minimum value of Y..
    You need to complete the square

    y = (x-a)^2 + b

    Has a minimum point at (a,b)
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    (Original post by TenOfThem)
    You need to complete the square

    y = (x-a)^2 + b

    Has a minimum point at (a,b)
    If the graphs equation was y=x^2-3x-1, how would you find the minimum value of Y?
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    (Original post by FLAKS)
    If the graphs equation was y=x^2-3x-1, how would you find the minimum value of Y?
    As I said

    You need to complete the square
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    (Original post by TenOfThem)
    As I said

    You need to complete the square
    Alright, thank you (:
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    I forgot How to complete the square so could somebody explain
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    (Original post by mcmuzzi98)
    I forgot How to complete the square so could somebody explain
    x^2 - 2px + q = (x-p)^2 + q - p^2
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    (Original post by TenOfThem)
    x^2 - 2px + q = (x-p)^2 + q - p^2
    So could you show me how you would work this one out x^2-14x+63=
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    (Original post by mcmuzzi98)
    So could you show me how you would work this one out x^2-14x+63=
    What have you been doing for the past two years in maths?
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    (Original post by lolface32)
    What have you been doing for the past two years in maths?
    What do you mean
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    (Original post by mcmuzzi98)
    So could you show me how you would work this one out x^2-14x+63=

    Can you not use the formula that I gave

    What is p
    What is q
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    (Original post by mcmuzzi98)
    What do you mean
    What I mean is that this stuff is easy?
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    (Original post by lolface32)
    What I mean is that this stuff is easy?
    It may be easy to you, but that doesn't give you the right to imply/insult another member.
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    (Original post by joostan)
    It may be easy to you, but that doesn't give you the right to imply/insult another member.
    I'm sorry, it is just that I have had to teach myself this in the space of 1 week, the whole edexcel syllabus. The fact that he has more than likely had a lot more time is just ridiculous, he only starts caring when we are one day away from the exam
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    (Original post by lolface32)
    he only starts caring when we are one day away from the exam
    That is rather presumptive
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    (Original post by TenOfThem)
    That is rather presumptive
    hahahaha, yeah it actually is after reading back I'm just stressed :eek:
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    Woaho, calm down people, exam is today, just relax and do as best as you can. Remember, do the questions that you are confident with first.
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    I'm closing this thread now to reduce the temptation for people to discuss how the paper before the embargo ends at midnight.
Updated: March 4, 2013
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