DM UNIT 1,2

If A and B are two sets then B- (B-A) = ___________

• (A-B)-B

• A-(A-B)

• A

• B

If f: A → B is a bijective function and if n(B) = 7 , then n(A) is equal to ___________

• 7

• 49

• 1

• 4

If the ordered pairs (a + 2, 4) and (5, 2a + b) are equal then (a,b) is_____________

• (2,-2)

• (5,1)

• (2,3)

• (3,-2)

The range of the relation R =(x,x²)/x is a prime number less than 13 is

• {2,3,5,7}

• {2,3,5,7,11}

•      {4,9,25,49,121}

• {1,4,9,25,49,121}

Find the range of the relation R = (x, x³), where x is a prime number less than 10.

• {2, 3, 5, 7}

• {2, 3, 5, 7, 11}

• {2, 3, 5, 7, 11, 13}

• {2, 3, 5, 7, 11, 13, 17}

If the ordered pairs (m + 3, 5) and (6, 3m + n) are equal, then (m, n) is equal to ___________

• (3, -2)

• (6, 2)

• (3, 1)

• (2, -3)

If f: X → Y is a bijective function and n(Y) = 8, then n(X) is equal to ___________

• 8

• 64

• 1

• 4

Is the following a Function? Explain

(You may need to click on the picture to see it better)

• Yes; Each input has exactly one output.

• Yes; At least one input has more than one output.

• No; Each input has exactly one output.

• No; At least one input has more than one output.

• Polynomial function

     

• Rational function

•     Irrational function

• Transcendental function

• Symmetric

•   Reflexive

• Transitive

• Antisymmetric