Match the following questions and answers if the functions a

Match the following questions and answers if the functions are given as below: f(x) = squarerrot x and g(x) = x + 2.

Solution

(1)

fog(x)=f(g(x)) =(x+2)

answer5

(2)

x+20

=>x-2

domain of fog(x)=[-2,)

answer6

(3)

gof(x)=g(f(x))=(x)+2

answer2

(4)

x0

domain of fog(x)=[0,)

answer3

(5)

fog(2)=f(g(2))

fog(2)=(2+2)

fog(2)=4

fog(2)=2

answer7