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Functions

Author: Math ELS
Description:
Keywords: , , , , , , online teaching

Content:
Quiz:
1. if f(x) = x² %2b 2x , then f(1) = .............
A) 1
B) 2
C) 4
D) 3

2. Each of the following is a function except
A) y = √x
B) y = 2/x
C) y = 3
D) x² %2b y² = 9

3. If f(x) = x² -1, then f(3) = .......
A) f(1)
B) 3
C) f(-3)
D) -3

4. The domain of the function f(x) = 3 is ............
A) ℝ
B) ∅
C) ℝ - {3}
D) ℝ - {0}

5. The domain of the function f(x) = (x -2) / (x - 3) is ............
A) ℝ - {3}
B) ℝ - { 2 , 3 }
C) ℝ - {2}
D) ℝ

6. The domain of the function f(x) = (2x -1) / (x %2b 4) is ............
A) ℝ - { 4 }
B) ℝ - { ½ }
C) ℝ - { - 4 }
D) ℝ

7. The domain of the function f(x) = (x %2b1) / (3x -2) is ............
A) ℝ - { 2 }
B) ℝ - { 2/3 }
C) ℝ - { -1 }
D) ℝ - { -1 , 2/3 }

8. If f(x) = x - 2 and g(x) = x² - 1, then f(10) = ...........
A) g(10)
B) g(3)
C) g(8)
D) g(-1)

9. If f(x) = x - 2 and g(x) = x² - 1, then f(5) - g(2) = ...........
A) 0
B) 1
C) 2
D) 2

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