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Math Help - Super easy economics question

  1. #1
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    Jan 2010
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    Super easy economics question

    Ok so I have a utility function of
    U = x1x2

    It asks how do I write an equation for the indifference curve for (6,1)



    I have spent 2 hours on this, I know its easy, I honestly cannot remeber anything about equations of lines or the sort. I am thinking that if u=6. Then prehaps it would just be

    x=1/6

    I really don't know. there is no examples on how to do this I think it assumes I know how to equate curves.
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  2. #2
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    The total utility from a bundle (6,1) is 6. Hence, you fix u at 6 and you let vary either x1 or x2 the other being the dependent variable.
    The indifference curve is then x2 = 6/x1.
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