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If f = {(1,4), (2,5),(3,5) and g ={(4...

If `f = {(1,4), (2,5),(3,5) and `
`g ={(4,8),(5,7),(6,9)},` then gof is

A

`{}`

B

`{(1,8),(2,7),(3,7)}`

C

`{(1,7),(2,8),(3,9)}`

D

`{(1,8),(2,5),(3,9)}`

Text Solution

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The correct Answer is:
B
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TARGET PUBLICATION-SETS, RELATIONS AND FUNCTIONS-CRITICAL THINKING
  1. If f(x) = 1/(1-x), then f(f(f(x))) is equal to

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  2. If f (x) =(x+3)/(4x-5) and t =(3+ 5x)/( 4x -1), then f (t) is

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  3. If f = {(1,4), (2,5),(3,5) and g ={(4,8),(5,7),(6,9)}, then gof is

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  4. If f (x) = (x-1)/(x +1) then f (alphax )=

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  5. If f be the greatest integer function and g be the moduls function, th...

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  6. If f : R to , then f (x) =|x| is

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  7. If f : [0,oo)to [0,oo) and f(x) =(x)/(1+x), then f is

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  8. Verify whether the function f : A to B , where A = R - {3} and B = R -...

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  9. If R denotes the set of all real numbers, then the function f : R to R...

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  10. Mapping f : R to R which is defined as f (x) = cos x,x in R will be

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  11. If the domain of the function f(x) = x^2 - 6x + 7 is (- oo,oo), then t...

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  12. Domain of the function f (x) = ((x )/(1+x)) is

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  13. Domain of the function (sqrt(1+x)-sqrt(1-x))/(x ) is

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  14. The domain of sin ^(-1)[log (3) ((x)/(3)) ] is

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  15. The domain of the function f(x)=sqrt(x^(2)-5x+6)+sqrt(2x+8-x^(2)) , ...

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  16. Domain and range of f (x) = (|x-3|)/(x-3) are respectively

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  17. Range of the function f (x) = (1)/( 3x +2) is

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  18. The range of the function, f (x) = (1+ x ^(2))/(x ^(2)) is

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  19. Find the range of the function f(x)=x/(1+x^2)

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  20. Range of the function f(x)=(x^2-3x+2)/(x^2+x-6) is

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