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    (Original post by Gilo98)
    does p = purchase price or is it just so constant?
    read the question ...
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    (Original post by TeeEm)
    just did this question with one of my students ... (he got eaten badly)
    Any takers
    I thought you were self employed at home?
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    (Original post by suyoof123)
    will you have a worked solution put up?

    i'll also attempt to not get eaten alive
    answer at 20.30 this evening
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    Can someone please show me how to simplify sqr(1-(x2/4)).

    THanks
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    (Original post by TeeEm)
    just did this question with one of my students ... (he got eaten badly)
    Any takers
    got t as 64.8289... ?
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    Teeeeeeeeeeeem I don't understand b of this question, how does it equal zero for a vertical asymptote 😭😭Name:  ImageUploadedByStudent Room1434030481.522197.jpg
Views: 259
Size:  64.5 KB


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    (Original post by frozo123)
    I thought you were self employed at home?
    I am
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    (Original post by TeeEm)
    read the question ...
    Ah....'where A and p are positive constants'
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    (Original post by TeeEm)
    answer at 20.30 this evening
    I attempted it and got stumped also...
    http://imgur.com/CiYYNVJ
    Stuck here and not sure if previous parts were correct.
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    Do we have to prove the addition formulae? You can prove tan (A+B) using sin/cos but how do you prove sin (A+B) and cos (A+B)
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    (Original post by suyoof123)
    I attempted it and got stumped also...
    http://imgur.com/CiYYNVJ
    Stuck here and not sure if previous parts were correct.
    For U , this is t years after 1990, and for V it is t years after 2000, you need to alter it, other than that I have got as far as you.
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    (Original post by TeeEm)
    just did this question with one of my students ... (he got eaten badly)
    Any takers
    I have an answer but its probably wrong

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    I have done all the edexcel past papers, probably just gonna go through a couple topics or do a few elmwood papers for the rest of the day.
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    (Original post by randlemcmurphy)
    For U , this is t years after 1990, and for V it is t years after 2000, you need to alter it, other than that I have got as far as you.
    so would you equate U and V but have t in U when you equate them as 10?

    maybe that would be correct.
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    (Original post by phawkins96)
    how do you prove the differential of a^x as being a^x lna?
    Let y=a^x
    *ln both sides*
    ln(y)=ln(a)^x
    *bring x power down*
    ln(y)=xln(a)
    *differentiate with respect to x* (baring in mind you can use implicit differentiation for "ln(y)")
    (1/y) dy/dx = ln(a) --------> for this you use uv'+vu' rule.
    *multiply by y*
    dy/dx=yln(a)
    *y=a^x*
    Therefore: dy/dx =(a^x)ln(a)
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    How do you do part 8e I can't quote get the answer even though it looks simple.


    https://b3755649dbd1afe3db91a899c3b9...%20Edexcel.pdf
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    (Original post by gcsestuff)
    Teeeeeeeeeeeem I don't understand b of this question, how does it equal zero for a vertical asymptote 😭😭Name:  ImageUploadedByStudent Room1434030481.522197.jpg
Views: 259
Size:  64.5 KB


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    when the asymptote indicates infinity the denominator must equal zero therefore se the bottom half of the fraction equal to zero and solve for x
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    (Original post by TeeEm)
    just did this question with one of my students ... (he got eaten badly)
    Any takers
    Is it 2044?

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    Is the answer 2029? not sure though...
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    Hardest C3 solomon paper?
 
 
 
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