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Currency Conflict and Trade Policy: A New Strategy for the United States C. Fred Bergsten and Joseph E. Gagnon
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41. The last two terms in equation (3B.5) apply the standard formula for the derivative of a product of two variables, uv, namely: d(uv) = u dv + v du, where u = (1 - y) and v = i.
42. Applying the standard derivative formula d(u∕v) = (v du - u dv)∕v2.
43. This result is also intuitive as it should be simply the negative of dy/ dz.
30. Cross-country studies of returns to education have tended to find that the percent