# Mathematical Economics Quiz 1

1.
Any subset that does not contain all elements of a set is called as

2.
The set contains common element(s) of of two sets is called

3.
Which of the followings represents the commutative law of union and intersection of two set

4.
If y = a/x is a rational function, what will be shape of y if a>0

5.
If manufacturer's cost function is C= 0.005x^3 - 0.02x^2 - 30x +5000, the marginal average cost will be

6.
If A and B are two matrices of same order and A+B = B+A, it implies matrix addition is

7.
If demand function is 4 - 5x then for which value of x demand will have unit elasticity

8.
The product of two matrix A (m x n) and B (p x q) will be defined if

9.
Which one of the followings represents the associative law of addition?

10.
If A and B are two matrices then AB ≠ BA holds

11.
Matrix with 1 in its principle diagonal and 0 everywhere else is called

12.
If y is a function of x and f'(x)=0 and f"(x)<0, then at value x, y will have

13.
The maximum order of the minor of matrix that gives non-singular solution is called

14.
Differentiation of a constant with respect to a variable will be

15.
the second differentiation of logx with respect tp x will be