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    I've done part a but I'm stuck on part b. I've got it up to 3^x - 3 - x = 0 but don't know where to go from there or if I've done it right!
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    (Original post by Kangie)

    I've done part a but I'm stuck on part b. I've got it up to 3^x - 3 - x = 0 but don't know where to go from there or if I've done it right!
    You'll have to use a numerical method of some kind. You can't solve it exactly. It looks like too much work for 2 marks though. Where is this question from?
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    (Original post by atsruser)
    You'll have to use a numerical method of some kind. You can't solve it exactly. It looks like too much work for 2 marks though. Where is this question from?
    Numerical method? It's from a past paper which my teacher put up in the school documents.
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    (Original post by Kangie)
    Numerical method? It's from a past paper which my teacher put up in the school documents.
    Strange question. What module is it a past paper for?

    Do you have a link to the whole paper?
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    (Original post by Kangie)
    Numerical method? It's from a past paper which my teacher put up in the school documents.
    Yes, you'll have to use some iterative method like guessing a lot, or Newton-Raphson or whatever. I agree with notnek: it looks weird.
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    (Original post by notnek)
    Strange question. What module is it a past paper for?

    Do you have a link to the whole paper?
    I uploaded it to a website, it's Q11:
    http://www.docdroid.net/101b6/mathem...-1-sl.pdf.html
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    (Original post by Kangie)
    I uploaded it to a website, it's Q11:
    http://www.docdroid.net/101b6/mathem...-1-sl.pdf.html
    Ah this is a paper where a graphical calulator is required. So you can use it to get solutions.
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    (Original post by notnek)
    Ah this is a paper where a graphical calulator is required. So you can use it to get solutions.
    Oh :facepalm: I completely forgot about putting the equations into the calculator, makes more sense!
 
 
 
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