QuestionAugust 27, 2025

What are the domain and range of f(x)=logx-5 domain: xgt 0 range; all real numbers domain: xlt 0 range: all real numbers domain: xgt 5 range: ygt 5 domain: xgt 5 range: ygt -5

What are the domain and range of f(x)=logx-5 domain: xgt 0 range; all real numbers domain: xlt 0 range: all real numbers domain: xgt 5 range: ygt 5 domain: xgt 5 range: ygt -5
What are the domain and range of f(x)=logx-5
domain: xgt 0 range; all real numbers
domain: xlt 0 range: all real numbers
domain: xgt 5 range: ygt 5
domain: xgt 5 range: ygt -5

Solution
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Answer

domain: x > 0 range: all real numbers Explanation 1. Determine the Domain The function f(x) = \log x - 5 is defined only for x > 0 because the logarithm function \log x is defined for positive x. 2. Determine the Range As x approaches 0 from the right, \log x approaches -\infty, and as x increases, \log x approaches \infty. Thus, f(x) can take any real value since subtracting 5 shifts the entire range of \log x down by 5.

Explanation

1. Determine the Domain<br /> The function $f(x) = \log x - 5$ is defined only for $x > 0$ because the logarithm function $\log x$ is defined for positive $x$.<br />2. Determine the Range<br /> As $x$ approaches 0 from the right, $\log x$ approaches $-\infty$, and as $x$ increases, $\log x$ approaches $\infty$. Thus, $f(x)$ can take any real value since subtracting 5 shifts the entire range of $\log x$ down by 5.
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