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Edexcel Mathematics: Core C1 6663 17th May 2017 [Exam Discussion] watch

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    when theres 100 on top of the sigma
    am i supposed to look for a pattern
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    (Original post by mathshelppp)
    when theres 100 on top of the sigma
    am i supposed to look for a pattern

    @RDKGames
    yes normally you will see a pattern, for example, each term of the sequence might be 5, so you'd multiply 5 by the number of terms.
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    Are you completely sure that your value for C is correct and that you've integrated correctly?
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    who thinks proof for sum of arithmetic series will come up?
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    (Original post by NRose12)
    who thinks proof for sum of arithmetic series will come up?
    I have hopes but, I'm doubting it.
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    (Original post by NRose12)
    yes normally you will see a pattern, for example, each term of the sequence might be 5, so you'd multiply 5 by the number of terms.
    so for c)
    its like this: 1, -1/1 + 1 -1/2

    not sure what to do next
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    (Original post by NotKidding)
    Are you completely sure that your value for C is correct and that you've integrated correctly?

    I did part b of question 10 You don't need to integrate use the differentiated equation they give you and equate it to the inverse of the gradient as it is perpendicular .
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    (Original post by mathshelppp)
    so for c)
    its like this: 1, -1/1 + 1 -1/2

    not sure what to do next
    im not sure what question you are referring to
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    (Original post by rayyanbkc)
    I did part b of question 10 You don't need to integrate use the differentiated equation they give you and equate it to the inverse of the gradient as it is perpendicular .
    Can you post the full question/link the paper? Would be a lot easier to help you that way
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    (Original post by NRose12)
    im not sure what question you are referring to
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    (Original post by NotKidding)
    Can you post the full question/link the paper? Would be a lot easier to help you that way
    Oh lol I didn't ask for help check my original post I posted it as a solution for someone else .

    Here's the question anyways - Scroll to question 10 part B

    http://onmaths.com/mock_exams/edexce...17-prediction/
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    (Original post by rayyanbkc)
    Oh lol I didn't ask for help check my original post I posted it as a solution for someone else .

    Here's the question anyways - Scroll to question 10 part B

    http://onmaths.com/mock_exams/edexce...17-prediction/
    You can't scroll down it's an electronic paper where you start on Q1 and have to mark each question before moving to another...

    Take a screenshot and post it instead
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    (Original post by NotKidding)
    You can't scroll down it's an electronic paper where you start on Q1 and have to mark each question before moving to another...

    Take a screenshot and post it instead

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    (Original post by mathshelppp)
    so for c)
    its like this: 1, -1/1 + 1 -1/2

    not sure what to do next
    the sequence is 1, -0.5, 1, -0.5....., and because you want the sum of the first 100 terms, you can just do 50 times the sum of the first 2 terms (because each set of 2 terms is the same)
    so you would get 50*(1-0.5) which is equal to 25.
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    (Original post by mathshelppp)
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    It's 1, -1/2, 1, -1/2 etc. Try working out the second term again.

    So you do (50 x 1) + (50 x -1/2) =50-25 =25
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    (Original post by boaconstricta)
    It's 1, -1/2, 1, -1/2 etc. Try working out the second term again.

    So you do (50 x 1) + (50 x -1/2) =50-25 =25
    yeah thats what i got, that was a typo

    thanks xx
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    (Original post by rayyanbkc)
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    Just did the question and got both parts right. Was it just part b that you got wrong?
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    (Original post by NotKidding)
    Just did the question and got both parts right. Was it just part b that you got wrong?
    I didn't get it wrong Tho posted my solution for someone else , thanks anyways
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    Name:  q11c how to do.PNG
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    Can you guys tell me the hardest core 1 paper in edexcel exam board I'm an aqa exam board student
 
 
 
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