Show that the utility function is homothetic if and only if all demand functions are...
Question:
Show that the utility function is homothetic if and only if all demand functions are multiplicatively separable in price and income and of the form {eq}x(p,y) = \phi(y)x(p,1). {/eq}
Utility Function:
In economics, the aforementioned term is associated with the consumer preferences for products and services wherein consumers will prefer a bundle of products and services that give them a higher level of satisfaction.
Answer and Explanation: 1
Become a Study.com member to unlock this answer! Create your account
View this answerConsider the given function;
{eq}x (p, y) = \phi (y) x (p, 1) {/eq}
We know that the given function will become homothetic if the ratio of the...
See full answer below.
Ask a question
Our experts can answer your tough homework and study questions.
Ask a question Ask a questionSearch Answers
Learn more about this topic:

from
Chapter 3 / Lesson 9Learn about consumer preferences in economics and understand the importance of the consumer choice theory - study examples of consumer preference assumptions.
Related to this Question
- Suppose that there are two goods, X and Y. The utility function is u=x^2y. the price of X is P, and the price of Y is $2. income is $90 Derive the demand for X as a function of P.
- Consider the utility function U(x,y) = 2x^1/2 + 4y^1/2: a) Find the demand functions for goods x and y as they depend on prices and income. b) Find compensated demand functions for goods x and y.
- Suppose that you have the following utility function: U(x, y) = 6 x^0.5 + y.The price of x is px and the price of y is 1. Your income is Y = $36. a. Find the uncompensated demand for good x. That is, find the amount of x which maximizes her utility subje
- Show that the two utility functions given below generate identical demand function for goods X and Y: (i) U(X,Y) = log(X) + log(Y) (ii) U(X,Y) = (XY)^{0.5} The demand function for good X and th
- Suppose that there are two goods, X and Y. The utilitiy function is U=XY+X. The price of X is P, and the price of Y is $40. Income is $200. Use a Lagrangian to derive the demand for X as a function of
- Are the expenditure function, Hicksian demand function and the Walrasian demand function homogeneous functions? If so, of what degree?
- Suppose the utility function is U(x, y) = min(x, y) Determine the substitution and income effect of a change in the price of x, and what is the demand equation for x?
- For the utility function U(x,y) = 8ln(x) + 2y, with a price of x equal to $1 and a price of y equal to $1, what is the elasticity of the demand for y with respect to income?
- The linear demand function, the log-log demand function and two alternative forms of the semi-log demand function are simple formulas for demand functions where the quantity of a good demanded is represented as a function of its price and the consumer's i
- The demand function for a product is given by q=\frac{60}{p^{0.5. Generalize the example to compute the own-price elasticity of demand for the demand functions given by q=\frac A{p^\theta}, where \theta>0.
- Here is a linear demand function: 0.5Q = 15 -2P. Find its price function by inverting the demand function. Then find its total revenue function by multiplying through by Q. Example: The linear demand function Q = 400 -250P inverts into the price function
- The linear demand function, the log-log demand function, and two alternatives forms of the semi-log demand function are simple formulas for demand functions where the quantity of a good demanded is represented as a function of its price and the consumer's
- Given U (X,Y) = X0.5 + Y0.5 and budget function as I = Px.X + Py.Y where X and Y are 2 goods, I: Income, Px and Py as price of X and Y respectively. Derive Marshalian demand function associated with
- Consider a linear inverse demand function, p = 8 - 0.5qD - y, where p denotes price; qD is quantity demanded; y represents income. Now consider a supply function, qS = -4 + 3p and income increases to y = 2.5. Plot the demand and supply functions.
- Find the own-price elasticity of demand for gasoline if the demand function is x = 20/P_x^{0.5}. Plot the demand function (with price on the upper axis and x on the lower axis) for x = 2, 4, 6, and 8. Derive a function for total spending (xP_x) given this
- If the demand function is D=4-P, the supply function is S =2+P. Draw the graph of the market equilibrium and calculate the equilibrium price.
- Suppose a market has the demand function Qd=20-0.5P. At which of the following prices will total revenue be maximized? a. $20 b. $10 c.$30 d. $40
- Derive the income elasticity of demand for individuals with perfect complements utility functions. (U(q1, q2) = min{aq1, bq2}, for a, b>0 ). Hint: Try to find demand function for each utility function first, and then derive income elasticity.
- Hashem has the utility function U (x,y) = x^{0.2}y^{0.8} The price of commodity x is 2 and the price of commodity y is 4. Hashem has a monthly income of $60. A. Derive Hashem's demand function (Hint
- Here is a linear demand function: 2Q = 20 -4P. a. Find its price function by inverting the demand function. b. Then find its total revenue function by multiplying through by Q. Example: The linear demand function Q = 400 -250P inverts into the price fun
- Consider a situation where a consumer demands two goods, x and z with the utility function: U=x^{0.3}z^{0.7} (a) Derive the marginal rate of substitution (b) Derive the demand functions for x and z a
- Given a linear demand function of the form QXd = 200 - 0.25PX, find the inverse linear demand function.
- Given the demand function q=-2p+12 and supply function q=p+3, calculate the equilibrium price.
- 1.Suppose, the supply function is S = \frac{10 + 3p^3}{4p + 1}. Determine elasticity of supply at p = 2 . 2.The demand function is Q^d = 10000 - 500p. Determine at which price the demand will be ine
- Calculate the price and income elasticities for the following demand functions. a) x(p,m) = \frac{m}{2p} b) x(p,m) = \frac{m-10}{p} (Consider only the case m 10.)
- Use calculus to show that the own price elasticity of demand is a constant, \varepsilon, at all prices is the demand function is exponential, Q = AP^{ \varepsilon}, where A is a constant. Ghose and Han (2014) estimated that the demand function for google
- The demand function for drangles is qd = (p+1)^(-2). a. What is the price elasticity of demand at price p? b. At what price is the price elasticity of demand for drangles equal to -1? c. Write an expr
- Consider a demand function Q_d = 900 - 2P + 3P_a + 0.4M + 1.5A and a supply function Q_s = 45,500 - 0.5P, where Q_d = quantity demanded, P = price of Myvi car (in RM), P_a = price of Produa Asia (in RM), M = average consumer income (in RM), A = promot
- Show how to calculate the indirect demand Function (Q = f(P)) and direct demand function while running OLS? |P|Q |$15.25|125 |$14.79|133 |$14.33|140 |$13.57|141 |$12.96|147
- Assume that Adam's income is Y and his utility function is U = 4 sqrt{q_1q_2}. Prices are p_1 and p_2. a. Using the Lagrangian method, derive the uncompensated demand equations for goods 1 and 2. Show the full derivation. b. Assume that Y is 100 and both
- The demand function for a product is p = 60e^{-0.025q} (a) Write the expression for the own price elasticity of demand (q). Hint: Use the formula for derivative . \frac{de^{ax{dx} = ae^{ax} (b
- The demand function for a product is given by q=\frac{60}{p^{0.5. a) Write the expression for the own-price elasticity of demand \epsilon(q). b) Compute the own-price elasticity of demand \epsilon(q) at q=100.
- The demand function for a product is: p = 60e^-0.025q. A) Write the expression for the own price elasticity of demand epsilon (q). Hint: Use the formula for derivative de^ax/dx = ae^ax. B) Compare the
- Consider a linear inverse demand function, p = 8 - 0.5qD - y, where p denotes price; qD is quantity demanded; y represents income. Talk about the assumptions of the demand function. Why is the demand function not realistic? Why do we still use it for econ
- The Hicksian demand function for good 1 is: H (good 1) = \frac {(u + 2lnP_1 + lnP_2 + 1.91)} { 3 } Prove that the Hicksian demand function for goods 1 is homogeneous of degree zero in prices (P).
- Consider a linear inverse demand function, p = 8 - 0.5qD - y, where p denotes price; qD is quantity demanded; y represents income. Solve the corresponding demand function. Explain the meaning of it. What kind of goods could have this demand function?
- Here is a linear demand function: Q = 7 -3P. Find its price function by inverting the demand function. Then find its total revenue function by multiplying through by Q. EXAMPLE: The linear demand fun
- The demand and supply functions for a good are respectively given by D = D(P,Y) and S = S(P,T), where 'P,' 'Y,' and 'T' represent price, income, and taxes respectively. Assume that D_P is less than 0,
- The equation below represents a linear demand curve. Show all derivations. 1) Plot the demand function on the top set of axes. Q_x=10000-500P_x 2) The price function is the inverse of the demand function. Show this inverse below. 3) Use the price
- Suppose a firm monopolizes market of Product 1 and 2 whose cost of production is: C(q_1, q_2) = (1/2)q^2_1 + (1/2)q^2_2 + sq_1 q_2. The firm faces linear inverse demand functions of:
- Consider a linear inverse demand function, p = 8 - 0.5qD - y, where p denotes price; qD is quantity demanded; y represents income. Discuss what factors could affect the slope of the demand function.
- Consider a situation where a consumer demands two goods, x and z with the utility function U = x ^0.3 z ^0.7 (a) Derive the marginal rate of substitution 4 (b) Derive the demand functions for x and
- Suppose a firm monopolizes market of product 1 and 2, whose cost of production is . C(q_1, q_2) = (1/2)q_1^2 + (1/2) q_2^2 + sq_1q_2 The firm faces linear inverse demand of functions P_i(q_i, q_j)
- Consider a linear inverse demand function, p = 8 - 0.5qD - y, where p denotes price; qD is quantity demanded; y represents income. Does this inverse demand function have a real meaning? If yes, explain; If no, why?
- Suppose the demand function for a firm's product is given by In Qdx=7-1.5 InPx+2InPy-0.5InM+InA where Px=$15, Py=$6 M=$40,000 and A=$350. (a) Determine the price elasticity of demand, and state whethe
- Suppose a market has a demand function of Qd = 20 - 0.5P. At which of the following prices will total revenue be maximized? a. 30 b. 10 c. 20 d. 40
- Market demand for a given year is QD = 31,622,776.60?P^-1.25. Solving the function for price yields inverse demand: P = 1,000,000?Q^-0.8. Therefore, marginal revenue is MR = 200,000?Q^-0.8. If the
- The generalized demand and supply functions for good X are Q_d = 10 - 2P_X + 2P_Y + M and Q_s = 10 + 2P_X. A. What is the demand function when P_Y = $2 and M = $500? B. Use the demand function you found in part A and solve for the equilibrium price (P_o)
- If the two functions from questions 1( MB(q)=320-18q ) and 2 ( MC(q)=20+6q ) were demand and supply functions: (a) Plot both functions on one graph. (b) Show (i.e., calculate algebraically, brie y s
- Suppose the demand function is given by Qxd = 10Px0.9 Py0.5 M0.22 H. Then the cross-price elasticity between goods x and y is: Select one: a. 0.9. b. 0.5. c. 0.22. d. -0.5.
- Suppose that the demand function for good Y is given as a linear function: Qd(P)=120-2P. where P is the price of good Y. Find the price at which price elasticity of demand for Y is -1.
- The generalized demand and supply functions for good X are given below. Find the inverse demand function.
- Martha has the utility function u(x, y) = min{2x, y}. Write down her demand function for X as a function of variables m, pX, and pY , where m is income, pX is the price of x, and pY is the price of Y .
- For the demand equation x = f(p) = 30 - 10\sqrt{p}, find the revenue function. Sketch the graph of the revenue function and indicate the regions of inelastic and elastic demand on the graph.
- When the price of fangos is $930, 3160 are demanded. When the price of fangos is $340, 7880 are demanded. 1. Using this information and assuming the demand for fangos is a straight line, identify the demand function for fangos. 2. Graph the demand and mar
- The Inverse demand function is P=10-2D if a consumer's demand is 2. Calculate the consumer surplus.
- Wanda's utility function is U(x,y) = x + 47y - 3y^2 . Her income is $107. If the price of x is $1 and the price of y is $23, how many units of good will Wanda demand?
- The demand and supply functions for a good are respectively given by D = D(P,Y) and S = S(P,T), where P, Y and T represent price, income and taxes. Assume that Dp is less than 0, Dy is greater than 0,
- A consumer maximizes u(x, y) = xy/2 + 5 given that her income is I, price of x is px and price of y is py. Derive the demand functions of this consumer. (Hint: you may use this fact ax^2 + bx + c = a(x + b/2a )^2 + c - b^2/4a)
- The general demand for good X is: Qd = 2500 - 8Px + 0.1M + 12Py. If M = $50,000 and Py = $250, what is the demand function? What is the inverse demand function? Fully explain the coefficient for M
- A demand function is given by the equation q=120-2p, suppose the price is P=10. Must find three things: When the price is P=10, what is the quantity? The total revenue at this point is? The price ela
- A) Graph the supply function: Supply p = 0.2q + 10; and demand function: Demand p = -0.4q + 70. B) Find the equilibrium point E for the demand and supply functions given in Part A. C) Plot the new dem
- A firm faces the following demand and cost functions: P = 22.2 - 1.2Q, \; TVC = 0.4Q^2 + 3Q, \; TFC = 40. At what price is revenue maximized?
- The price function is the inverse of the demand function. What is the inverse below? Qx=80000-100Px.
- You are given two demand functions: Q=120-2.25P Q=150-10P a) Using the first demand function and the mid point method, compute the price elasticity of Demand between quantities 20 and 30. Compute t
- Graph the following supply and demand functions. Q_d = 28 - \frac{1}{2}P, Q_s = 2P - 20 where Q_d and Q_s are the quantities demanded and supplied, respectively, and P is the price.
- If the demand function is Qd=-0.5P+20, Calculate the quantity demand when the price is 15.00
- Using the two Demand functions, draw and determine the aggregate demand function. Pay close attention to the details of the graph. Q=120-2.25P Q+150-10P
- Consider the general demand function: Qd = 8,000 - 16P + 0.75M + 30Pr A. Derive the equation for the demand function when M = $30,000 and Pr = $50. B. Interpret the intercept and slope parameters of the demand function derived in part A. C. Sketch a gr
- Demand for a product is given by the function p=-aq^2+bq+c, where a,b and c are constants and q\geq 0. If a=1.8, b=12.9, and c=39 the price elasticity of demand at q=5.9 is {Blank}.
- Suppose the demand function is Q_{x}^{d} = 100 - 8P_{x} + 6P_{y} - M. If P_{x} = $4, P_{y} = $2, and M = $10, what is the cross-price elasticity of good x with respect to the price of good y? A) 0.17
- Suppose a consumer's utility function is U(X, Y) = X + 2Y. The consumer has $8 to spend (M = $8). The price of good Y is PY = $2. Fill in the table below which gives price/quantity combinations on the Demand Curve for Good X:
- Assume the market for a commodity is described by the demand and supply functions Demand: q = 30 - 2/3 p Supply: q = 2p-10 a) Determine the equilibrium price and quantity in this market. b) Derive the inverse demand and supply functions, draw a graph to i
- Suppose an agent has preferences represented by the utility function u(x1, x2)=X1 square X2 cube. The price of x1 is 3, the price of x2 is 2, and the income is 10. Mathematically derive this consumer's demand curve for good 1.
- In the linear demand function, Q_x^d = alpha_0 + alpha_xP_x + alpha_MM + alpha_HH, where P_y is the price of the related goods, M is the income, and H is other factors, the value of alpha_M is A. negative if good X is inferior. B. positive if X and Y are
- Consider a market demand function that can be written as Q(P) = P2 - 10P + 25 which has a choke price of P = 5 (i.e. this function holds only for prices from P = 0 to P = 5, and Q(P) = 0 for all prices P greater than 5). Calculate the price elasticity of
- Consider a linear inverse demand function, p = 8 - 0.5qD - y, where p denotes price; qD is quantity demanded; y represents income. When p = 1 and y = 1, compute the price elasticity and income elasticity. Explain the meaning of the two elasticities.
- The demand function for pizza is given by Q = 100 - 2P_pizza + P_pasta + 0.1Y, where P_pizza is the price of pizza, P_pasta is the price of pasta, and Y is income. Suppose that the price of pizza is $10, the price of pasta is $12, and income is $1,000. Ca
- Suppose that in the market for roses, there are only 2 consumers with different demand functions: Jordan's demand function is Q^D = 20 - 2P. JoJo's demand function is Q^D = 28 - 6P. A) Derive the equa
- The generalized demand and supply functions for good X are given below. Find the inverse supply function.
- Consider a linear inverse demand function, p = 8 - 0.5qD - y, where p denotes price; qD is quantity demanded; y represents income. Now consider a supply function, qS = -4 + 3p. And income increases to y = 2.5. What are the equilibrium price and quantity?
- 1. Elasticities: Consider the following supply and demand functions qD = 12 2p qS = 3 + 3p a) Plot the supply and demand functions. b) What are the equilibrium price and quantity? c) At the equil
- Given the demand function of D(p) = 200,000 - 10,000p. Determine the inverse demand function.
- Consider the general demand function: Q_d = 8,000 - 16 P + 0.75 M + 30 PR; where Q_d is quantity demanded, P is price, M is income, and PR is the price of a related good. (a) Derive the equation for the direct demand function when M = $30,000 and PR = $50
- The market demand is given by Q=140-2P. Determine the inverse demand function and the slope.
- Assume that demand for a good (X) is a function of its price (PX), the price of good Y (PY), and Income (M). The equation that follows would be: QX = {( M + PY) / ( 2PX)} - 1. Given that PX = 2, PY =
- Suppose the demand function is given by Q_x^d = 10P_x^{0.9} P_y^{0.5} M^{0.22} H. Then the cross-price elasticity between goods x and y is:
- Consider a product that has a cost function: c(y) = 20y+25. Demand for this product is represented by the demand curve: y=1/b*(A-p). Note that this is equivalent to the inverse demand curve: p = A
- The demand function for Good X is given by: Q_x^d = 100 - 0.2P_x a) What is the own-price elasticity of demand when P_x - $50? Is the demand elastic or inelastic? b) At what price is total revenue max
- Suppose that in the market for roses, there are only 2 consumers with different demand functions: Jordan's demand function is Q^D = 20 - 2P Jo Jo's demand function is Q^D = 48 - 6P A) Derive the equat
- Consider a demand function P = 10 2Qd + Y, and the supply function P = 3 + Qs - w, where P is the market price, Qd is the quantity demanded, Qs is the quantity supplied, Y is the income, w is the labor cost. What are the demand curve and supply curve wh
- The demand function for good X is lnQ Xd = a + b lnPx + c lnM + e, where Px is the price of good X and M is income. Least squares regression reveals that: a. If M = 55,000 and Px= 4.39, compute the own price elasticity of demand based on these estimates.
- The following two linear functions represent a market (thus one is a supply function, the other a demand function). Approximately what will the equilibrium price be? Q = 100 - 4.6 P and Q = 75 + 6.2 P a. 2.3. b. 84.3. c. 86.2. d. 89.3. e. 93.1. f. 93.6.
- The demand function is x= i/2P_x+P_y/P_x. x for milk and y for coffee, i for income. How do you describe the relationship between demand for milk (x) and 1. income, 2. the price of milk, 3. the price of coffee. Answer must reference the demand function an
- Using OLS, the estimated inverse demand function (P = f(Q)) is: a. Q = 67.12 - 0.22P b. Q = 2.78 + 0.02P c. P = 0.969 - 0.556Q d. P = 67.12 - 0.22Q Using algebra to transform the indirect demand function, the direct demand function (Q = f(P)) is: a. P = 3
- Given the demand function, Q=100-10P+0.5P^2, find the price elasticity of demand at P=4.
- The demand and supply functions for sweatshirts (the basic grey kind) are as follows: (TABLE) a. Graph the demand and supply functions for sweatshirts and find the equilibrium price and quantity. b. What effect will an increase in the price of gym shoes (
- Suppose you have the demand function given: d=40- 2p^2+m, where M is income and P is the price of a good . You have an income of $100. a) Compute the price elasticity of demand. b) If P=1, is the good elastic, inelastic or unit elastic? c) Assuming P=1, c
- A demand function is given by the equation Q=107-4P. Suppose the price is P=12. At this price, find the price elasticity of demand. USE THE POINT SLOPE METHOD to find this elasticity. Hint: You'll have to find the quantity at this price as well. Round you
- Consider the following linear demand function: Q = 320 - 1/8P. Write the inverse demand function.