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This particular Assignment references the syllabus chosen for the subject of Mathematics, for the July 2021 - January 2022 session. The code for the assignment is BECE-15 and it is often used by students who are enrolled in the BA Degree.
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A. Long Answer Questions
Answer any two questions.
1. A monopolist faces the demand curve Q = 60 - P/2. The cost function is C = Q2 Find the output that maximises this monopolist’s profits. What are the prices at profits and that output? Find the elasticity of demand at the profit maximizing output.
2. A firm in a perfectly competitive market has the following cost function:
C = 1/3q3 – 5q2 + 30q +10
If the market-clearing price is 6, obtain the profit maximising level of output.
3. Consider the following Macro-Model (Multiplier – Accelerator Interaction):
i) Find the time path Y(t) of national income, and
ii) Comment on the stability conditions.
4. Discuss the importance of the Hawkins-Simon conditions in input-output analysis.
B. Medium Answer Questions
Answer any three questions.
5. Using Cramer's rule solve the following equations:
(i) x + y - 2 = 0
2x- y +2 = 3
4x + 2y -22 = 2
(ii) 2x+4y = 18
4x-6y = 8
6. Find the short run average cost for the production function q = AL1/3K2/3 where total cost (TC) = wL + rK, the symbols having their usual meaning.
7. Find the matrix inverse of
8. Determine the eigenvalues and eigenvectors of the matrix
9. i) Let 
For what values of x will be the function be discontinuous?
ii) Show that 
tends to a1/a2 as 
10. Determine the distance between the points:
i) (3, 0, 7) and (- 4, 8, 2)
ii) (4, 6, 7, 1) and (-3, 0, 2, 4)
iii) The distance between the points (3, 1, 2, 4) and 
is 200. What can be said about the value of 
C. Short Answer Questions
Answer any three questions.
11. Evaluate the Limits of
12. If the demand function for a good is Q= 140 – 5P, what is the price elasticity of demand at P = 15 rupees?
13. If Z = f(x,y) = xy
Find the maximum value for f(x,y) if x & y are constrained to sum to 1 (That is x +y = 1). Solve the problem in two ways: by substitution and by using the Lagrangian multiplier method.
14. Define
a. Adjugate of a matrix
b. Decomposable matrix
c. Singular matrix
15. Determine the characteristic roots and the characteristic vectors of the matrix
16. Integrate
(i) x Sin x etc.
Answer any two questions.
Answer any three questions.
is 200. What can be said about the value of Answer any three questions.
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