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If fog = abs(sin x) and gof = sin^(2)x t...

If `fog = abs(sin x)` and gof =` sin^(2)x` then f(x) and g(x) are:

A

`f(x)=sqrt(sinx),g(x)=x^(2)`

B

`f(x)=absx,g(x)=sinx`

C

`f(x)=sqrtx,g(x)=sin^(2)x`

D

`f(x)=sinsqrtx,g(x)=x^(2)`

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The correct Answer is:
To solve the problem, we need to find the functions \( f(x) \) and \( g(x) \) given the relationships \( f(g(x)) = |\sin x| \) and \( g(f(x)) = \sin^2 x \). ### Step-by-step Solution: 1. **Understanding the Given Functions:** - We have two compositions: \( f(g(x)) = |\sin x| \) and \( g(f(x)) = \sin^2 x \). - We need to express \( f(x) \) and \( g(x) \) in terms of \( x \). 2. **Let’s Assume \( g(x) \):** - From \( g(f(x)) = \sin^2 x \), we can assume that \( g(x) \) is a function that transforms \( f(x) \) into \( \sin^2 x \). - A reasonable assumption is that \( g(x) = \sin^2(x) \) when \( x \) is in the range of \( f \). 3. **Finding \( f(x) \):** - Now, substituting \( g(x) \) into the first equation: \[ f(g(x)) = f(\sin^2 x) = |\sin x| \] - To satisfy this equation, we can assume that \( f(x) \) should be a function that, when applied to \( \sin^2 x \), gives \( |\sin x| \). - A suitable function for \( f(x) \) is \( f(x) = \sqrt{x} \) because: \[ f(\sin^2 x) = \sqrt{\sin^2 x} = |\sin x| \] 4. **Final Functions:** - Therefore, we conclude: \[ f(x) = \sqrt{x} \quad \text{and} \quad g(x) = \sin x \] ### Summary of Results: - \( f(x) = \sqrt{x} \) - \( g(x) = \sin x \)
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