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    Hi all,

    I can't get my answer into the form they've got it in even though it has the same value. Solution attached.

    Would I get marked down for this in an exam?
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    (Original post by WatermelonJuice1)
    Hi all,

    I can't get my answer into the form they've got it in even though it has the same value. Solution attached.

    Would I get marked down for this in an exam?
    you should not lose marks

    can you see how to switch between these 2 answers?
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    (Original post by TeeEm)
    you should not lose marks

    can you see how to switch between these 2 answers?
    Nope, not really :/
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    (Original post by WatermelonJuice1)
    Hi all,

    I can't get my answer into the form they've got it in even though it has the same value. Solution attached.

    Would I get marked down for this in an exam?
    That's fine. You might be interested in exploring surd denesting however. If you send me a private message I will send you a short article I wrote about this.
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    (Original post by WatermelonJuice1)
    Hi all,

    I can't get my answer into the form they've got it in even though it has the same value. Solution attached.

    Would I get marked down for this in an exam?
    Lucky you doing FP3 <3
    You're in year 13? Which module do you think has helped you the most in FP3?
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    (Original post by WatermelonJuice1)
    Hi all,

    I can't get my answer into the form they've got it in even though it has the same value. Solution attached.

    Would I get marked down for this in an exam?
    It's difficult to work through to their form from where you are, but if you use the fact, that kln(m) = ln(m^k), it's a bit easier to see. As for whether you'd get marked down, I think you would if they explicitly asked for a particular form.
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    (Original post by Placeboo123)
    Lucky you doing FP3 <3
    You're in year 13? Which module do you think has helped you the most in FP3?
    I just started it last week so I can't really judge very accurately. So far I'd say FP2.
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    (Original post by WatermelonJuice1)
    Nope, not really :/
    1/2ln(3+2√2)

    =ln[√(3+2√2)]

    =ln[12 +2x1x√2+(√2)2]

    =ln[√(1+√2)2]

    =ln[1+√2]
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    (Original post by TeeEm)
    1/2ln(3+2√2)

    =ln[√(3+2√2)]

    =ln[12 +2x1x√2+(√2)2]

    =ln[√(1+√2)2]

    =ln[1+√2]
    You lost me on the 3rd line, but I'm reading into a surd denesting article Mr M sent me so hopefully it will make sense soon.

    EDIT: Just read your response again and I get it. Thank you.
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    (Original post by WatermelonJuice1)
    You lost me on the 3rd line, but I'm reading into a surd denesting article Mr M sent me so hopefully it will make sense soon.
    I am using (a+b)2 = a2 +2ab+b2

    I hope it makes sense one way or another.

    good luck
 
 
 
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