budget constraint, which is depicted in Figure 1. In the absence of DTP the house-
hold begins with an income of one unit of Y and can trade from (0, 1) along the line
of slope -p. With DTP the household begins at the same place on the y-axis, but
can trade along the line of slope —p from x = x, i.e., up to point (X, 1 — px), which
is denoted by A in the figure. If the household purchases in this range its budget
constraint is fully represented by the intercept y = 1 and the slope —p. From x
to B(0, X + 1-p-x) on the horizontal axis, it can only purchase additional units of
X by trading along the line of slope —p. The same points could be reached if,
instead of facing DTP, it faced the price p for all units and had an endowment
of Y equal to 1 + (p — p)x, as shown by point C(0,1 + (p — p)x). Combining the
segments for x ≤ x and x > X, the entire budget constraint is represented by the
kinked thick line.
Fig 1 about here.
From (2), given that p>p), a change in the free market price p has no effect
on x if x ≤ x); but ifx > x),
dx
— = Xp + XXm.
dp
We assume throughout that Xp < 0 and Xm > 0,5 and so the sign of dX/dp is
5 A subscript is used to denote the partial derivative with respect to the variable subscripted.
More intriguing information
1. Globalization and the benefits of trade2. The name is absent
3. The East Asian banking sector—overweight?
4. Spatial patterns in intermunicipal Danish commuting
5. Delayed Manifestation of T ransurethral Syndrome as a Complication of T ransurethral Prostatic Resection
6. The economic value of food labels: A lab experiment on safer infant milk formula
7. STIMULATING COOPERATION AMONG FARMERS IN A POST-SOCIALIST ECONOMY: LESSONS FROM A PUBLIC-PRIVATE MARKETING PARTNERSHIP IN POLAND
8. Growth and Technological Leadership in US Industries: A Spatial Econometric Analysis at the State Level, 1963-1997
9. TRADE NEGOTIATIONS AND THE FUTURE OF AMERICAN AGRICULTURE
10. Pass-through of external shocks along the pricing chain: A panel estimation approach for the euro area