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Mathematics for Economic Analysis
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Mathematics for Economic Analysis
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25 Questions

1. The set of all elements which belong to set B but do not belong to set A is
2. A square matrix A, such that A = A’, is called a
3. If the value of the Jacobian determinant , the equations are
4. If the value of the Jacobian determinant = 0, the equations are
5. The set of all elements belonging to A but not to B is
6. In a matrix, if there is only one row but any number of columns, it is called
7. Given A in 2x2 and B is 2x4, then the matrix AB will be of the order
8. A function where a variable x can only vary in jumps, is often called
9. Maximum number of linearly independent rows and columns of a matrix is called
10. For any square matrix A of order ‘n’, A - AT is
11. Sets and set operations can be represented by drawing diagrams termed as
12. The point at which the graph cuts the x-axis is called
13. Y= a0+a1X is a function
14. If we are told that the two statements ‘y = 3x’ and ‘y = x + 10’ are both true at the same time, they are called
15. A set containing no element is called
16. Determinant of a 3X3 square matrix is called ----- determinant
17. A collection of well-defined distinct objects thought of as a whole is called
18. A square matrix A of order mxn is called an upper triangular matrix if aij = o for all
19. If all the elements of a matrix of any order are zero, it is called
20. A negative definite Hessian fulfills the second order conditions for
21. A set containing all the elements of the universal set except those of set A is called
22. If two sets contain the same distinct elements, then they are called
23. A square matrix A such that A2 = A is called
24. If two sets contain same number of distinct elements but not the same elements are called
25. For any square matrix A of order ‘n’, A(Adj A) is equal to

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