Home
Class 12
MATHS
If f(x) = x + 7 and g(x) = x - 7, x in R...

If f(x) = x + 7 and g(x) = x - 7, `x in R`, then value of fog (7) is :

A

7

B

`-7`

C

0

D

`-2`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MODEL TEST PAPER - 2

    ICSE|Exercise Section - B|10 Videos
  • MODEL TEST PAPER - 2

    ICSE|Exercise Section - C|10 Videos
  • MODEL TEST PAPER - 18

    ICSE|Exercise Section - C|10 Videos
  • MODEL TEST PAPER - 3

    ICSE|Exercise SECTION - C|10 Videos

Similar Questions

Explore conceptually related problems

Given that f(x) = 3x + 7 and g(x) = (x^2)/(2) , what is the value of f(g(4)) ?

Let f (x) = [x] and g (x ) =|x| , AA x in R then value of gof (( - 5 ) /(3)) + fog (( - 5)/(3)) is equal to: ( where f _ 0 g (x) = f (g (x))) .

If f : R rarr R and g : R rarr R be two mapping such that f(x) = sin x and g(x) = x^(2) , then find the values of (fog) (sqrt(pi))/(2) "and (gof)"((pi)/(3)) .

The mapping f: R rarrR , g, R rarr R are defined by f(x) = 5-x^2 and g(x)=3x -4, then find the value of (fog)(-1)

If f:R -> R, g:R -> R defined as f(x) = sin x and g(x) = x^2 , then find the value of (gof)(x) and (fog)(x) and also prove that gof != fog .

If f : R rarr R, f(x) = x^(2) + 2x - 3 and g : R rarr R, g(x) = 3x - 4 then the value of fog (x) is

If f(x)=1/x and g(x) = 0 then fog is

If f(x) = 7x + 9 and g(x) = 7x^(2) - 3 , then (f - g)(x) is equal to

Let f(x) = x+5 and g(x) = x -5 , x in R . Find (fog)(5).

If f: R->R , g: R->R are given by f(x)=(x+1)^2 and g(x)=x^2+1 , then write the value of fog\ (-3) .