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Math Help - who knows how to solve this

  1. #1
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    who knows how to solve this

    Given the utility function U= (X1^a)(x2^B) , where a,b >0 prove that the indifference curves are convex towards the origin
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  2. #2
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    The indifference curve's equation is (X1^a)(X2^b) = c for some constant c. Therefore, X2 = c' / X1^(b/a) for some constant c'. Now, the graph of any function of the form 1 / X^d for d > 0 looks similar to a hyperbola 1 / X.
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