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Operaions on functions

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

Content:
Quiz:
1. If f(x)=3x-1 and g(x)=x%2b4, then (f %2b g)(2) = ...........
A) 5
B) -1
C) 11
D) -11

2. If f(x)=3x-1 and g(x)=x%2b4, then (f - g)(x) = ...........
A) 4x %2b 3
B) x %2b 1
C) 2x - 5
D) 5 - 2x

3. If f(x)=3x-1 and g(x)=x%2b4, then (f - g)(0) = ...........
A) 5
B) -5
C) 3
D) -3

4. If f(x)=3x-1 and g(x)=x%2b4, then (f . g)(x) = ...........
A) 3x² %2b 11x %2b 4
B) 0
C) 3x² %2b 12x - 4
D) 3x² %2b 11x - 4

5. If f(x)=3x-1 and g(x)=x%2b4, then (f . g)(-1) = ...........
A) 4
B) 7
C) -12
D) 10

6. If f(x)=3x-1 and g(x)=x%2b4, then (f / g)(x) = ...........
A) 3x-1 / x%2b4
B) x%2b4 / 3x-1
C) ½
D) 2

7. If f(x)=3x-1 and g(x)=x%2b4, then the domain of (f / g)(x) = ...........
A) R
B) R - {-4}
C) R - {-4 ,1/3 }
D) R - {4}

8. If f(x)=3x-1 and g(x)=x%2b4, then (f / g)(-3) = ...........
A) -10
B) 8
C) 10
D) -8

9. If f(x)=3x-1 and g(x)=x%2b4, then (f ∘ g)(x) = ...........
A) 3x %2b 11
B) 3x%2b3
C) 2x %2b 3
D) 3(x%2b1)

10. If f(x)=3x-1 and g(x)=x%2b4, then (f ∘ g)(-3) = ...........
A) 6
B) 1
C) 2
D) -6

11. If f(x)=3x-1 and g(x)=x%2b4, then (g ∘ f)(x) = ...........
A) 3
B) 3(x%2b1)
C) 3x %2b 11
D) 3x %2b 6

12. If f(x)=3x-1 and g(x)=x%2b4, then (g ∘ f)(1) = ...........
A) 6
B) 0
C) -6
D) 12

13. If f(x)=3x-1 and g(x)=x%2b4, then [(f - g) . (g %2b f)](x) = ...........
A) 4x²-14x-15
B) 8x²-14x-15
C) -2x%2b2
D) 2x-2

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