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- This topic has 1 reply, 1 voice, and was last updated 2 years, 11 months ago by nazrina.

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- July 19, 2021 at 7:45 pm #10342
(a) (-infinity, infinity)

(b) (0, infinity)

(c) (1, infinity)

(d) (4, infinity)July 19, 2021 at 7:58 pm #10357::**Answer:**

**Given:**a(x) = 3x+1 , b(x) = (x-4)^1/2(b o a)(x) = b(a(x))

= b(3x+1)

= ((3x+1)-4)^1/2

= (3x-3)^1/2

= 3(x-1)^1/2So, the domain of x should be greater than equal to 1

i.e.**x belongs to (1,infinity)**Therefore the correct answer is

**(c)**.- This reply was modified 2 years, 11 months ago by ProtonsTalk.
- This reply was modified 2 years, 11 months ago by ProtonsTalk.

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