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Question
Math
Posted about 1 year ago

Given the functions:
f(x)=2xg(x)=x4h(x)=1x+5
f(x)=2 x \quad g(x)=|x-4| \quad h(x)=\frac{1}{x+5}


Evaluate the function (fg)(x)(f-g)(x) for x=6x=6. (fg)(6)(f-g)(6) is \square. \square
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Answer from Sia
Posted about 1 year ago
Solution by Steps
step 1
Given the functions: f(x)=2xf(x) = 2x, g(x)=x4g(x) = |x - 4|, and h(x)=1x+5h(x) = \frac{1}{x+5}, we need to evaluate (fg)(x)(f - g)(x) for x=6x = 6
step 2
Calculate f(6)f(6): f(6)=26=12f(6) = 2 \cdot 6 = 12
step 3
Calculate g(6)g(6): g(6)=64=2=2g(6) = |6 - 4| = |2| = 2
step 4
Subtract g(6)g(6) from f(6)f(6): (fg)(6)=f(6)g(6)=122=10(f - g)(6) = f(6) - g(6) = 12 - 2 = 10
Answer
(fg)(6)=10(f - g)(6) = 10
Key Concept
Function Evaluation
Explanation
To evaluate (fg)(x)(f - g)(x) for a given xx, calculate f(x)f(x) and g(x)g(x) separately, then subtract g(x)g(x) from f(x)f(x).

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