Podcast
Questions and Answers
For the function $f(x) = \log_b(ax + c) + d$, what transformation does the 'd' value represent?
For the function $f(x) = \log_b(ax + c) + d$, what transformation does the 'd' value represent?
- Horizontal shift
- Horizontal stretch
- Vertical shift (correct)
- Vertical stretch
The domain of a logarithmic function $f(x) = \log_b(x)$ includes all real numbers.
The domain of a logarithmic function $f(x) = \log_b(x)$ includes all real numbers.
False (B)
Describe how the graph of $y = \log_2(x)$ is transformed to obtain the graph of $y = \log_2(x - 3) + 2$.
Describe how the graph of $y = \log_2(x)$ is transformed to obtain the graph of $y = \log_2(x - 3) + 2$.
The graph is shifted 3 units to the right and 2 units up.
The vertical asymptote of the function $f(x) = \log_b(x - h)$ is $x = $ ______.
The vertical asymptote of the function $f(x) = \log_b(x - h)$ is $x = $ ______.
Match each logarithmic function transformation with its corresponding effect on the graph:
Match each logarithmic function transformation with its corresponding effect on the graph:
Which of the following describes the range of a logarithmic function of the form $f(x) = \log_b(x)$, where $b > 0$ and $b \neq 1$?
Which of the following describes the range of a logarithmic function of the form $f(x) = \log_b(x)$, where $b > 0$ and $b \neq 1$?
The graph of $y = -\log_2(x)$ is a reflection of the graph $y = \log_2(x)$ across the y-axis.
The graph of $y = -\log_2(x)$ is a reflection of the graph $y = \log_2(x)$ across the y-axis.
What is the vertical asymptote of the function $f(x) = \log(x + 5)$?
What is the vertical asymptote of the function $f(x) = \log(x + 5)$?
The domain of the function $f(x) = \log_2(x - 4)$ is $x >$ ______.
The domain of the function $f(x) = \log_2(x - 4)$ is $x >$ ______.
Match the logarithmic function with its corresponding vertical asymptote:
Match the logarithmic function with its corresponding vertical asymptote:
How does the graph of $f(x) = \log_2(4x)$ compare to the graph of $f(x) = \log_2(x)$?
How does the graph of $f(x) = \log_2(4x)$ compare to the graph of $f(x) = \log_2(x)$?
If $f(x) = \log_b(x)$ and $g(x) = b^x$, then $f(g(x)) = x$ for all real numbers x.
If $f(x) = \log_b(x)$ and $g(x) = b^x$, then $f(g(x)) = x$ for all real numbers x.
Describe the end behavior of the function $f(x) = \log_2(x)$ as $x$ approaches infinity.
Describe the end behavior of the function $f(x) = \log_2(x)$ as $x$ approaches infinity.
The function $f(x) = \log_5(x)$ is ______ over its entire domain.
The function $f(x) = \log_5(x)$ is ______ over its entire domain.
Match each logarithmic function with its corresponding transformation compared to the parent function $y = \log_2(x)$:
Match each logarithmic function with its corresponding transformation compared to the parent function $y = \log_2(x)$:
What is the effect of changing the base from 2 to 10 in a logarithmic function, such as comparing $f(x) = \log_2(x)$ to $g(x) = \log_{10}(x)$?
What is the effect of changing the base from 2 to 10 in a logarithmic function, such as comparing $f(x) = \log_2(x)$ to $g(x) = \log_{10}(x)$?
The graph of $y = \log_b(x)$ always passes through the point (0, 1) for any base $b > 0$ and $b \neq 1$.
The graph of $y = \log_b(x)$ always passes through the point (0, 1) for any base $b > 0$ and $b \neq 1$.
For $f(x) = \log_3(x)$, find the value of $x$ when $f(x) = 2$.
For $f(x) = \log_3(x)$, find the value of $x$ when $f(x) = 2$.
The range of the function $f(x) = \log(x^2 + 1)$ is $y \geq$ ______.
The range of the function $f(x) = \log(x^2 + 1)$ is $y \geq$ ______.
Match each function with its corresponding description:
Match each function with its corresponding description:
Flashcards
What is the domain of a function?
What is the domain of a function?
The set of all possible input values (x-values) for which the function is defined.
What is the range of a function?
What is the range of a function?
The set of all possible output values (y-values) that the function can produce.
What is a logarithmic function?
What is a logarithmic function?
A function of the form f(x) = log_b(x), where b is the base and x is the argument.
What is a vertical asymptote?
What is a vertical asymptote?
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What is a Horizontal Translation?
What is a Horizontal Translation?
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What is a Vertical Translation?
What is a Vertical Translation?
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What is Horizontal Stretch/Compression?
What is Horizontal Stretch/Compression?
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What is Vertical Stretch/Compression?
What is Vertical Stretch/Compression?
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What is the 'base' in logarithmic functions?
What is the 'base' in logarithmic functions?
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What is the argument of a log?
What is the argument of a log?
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Study Notes
- Graphing logarithmic functions involves identifying the domain and range, then sketching the graph.
Function 1: f(x) = logâ‚‚(3x + 1) + 5
- Domain: x > -â…“
- Range: All real numbers
Function 2: f(x) = logâ‚…(4x + 7) + 4
- Domain: x > -7/4
- Range: All real numbers
Function 3: f(x) = log₃(3x - 4) - 2
- Domain: x > 4/3
- Range: All real numbers
Function 4: f(x) = logâ‚‚(2x + 2) + 5
- Domain: x > -1
- Range: All real numbers
Function 5: f(x) = log₆(4x - 2) - 4
- Domain: x > ½
- Range: All real numbers
Function 6: f(x) = log(4x + 15) - 5
- Domain: x > -15/4
- Range: All real numbers
Function 7: f(x) = logâ‚…(3x + 14)
- Domain: x > -14/3
- Range: All real numbers
Function 8: f(x) = logâ‚„(3x + 12) - 3
- Domain: x > -4
- Range: All real numbers
Function 9: f(x) = logâ‚‚(2x + 8) + 5
- Domain: x > -4
- Range: All real numbers
Function 10: f(x) = log₃(3x - 1) - 5
- Domain: x > â…“
- Range: All real numbers
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