Sara’s demand function for good x is x(px,py,m) = m , where px is the 2px price of good x, py is the price of good y, and m is the income level. Is x a normal good at px = 1 and m = 24? Explore this by taking derivative of demand function with respect to m. Is x an ordinary good at px = 1 and m = 24? Explore this by taking derivative of demand function with respect to px.

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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Sara’s demand function for good x is x(px,py,m) = m , where px is the

2px

price of good x, py is the price of good y, and m is the income level.

  1. Is x a normal good at px = 1 and m = 24? Explore this by taking derivative of demand

    function with respect to m.

  2. Is x an ordinary good at px = 1 and m = 24? Explore this by taking derivative of demand

    function with respect to px.

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