/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 32 Graph each function by using its... [FREE SOLUTION] | 91Ó°ÊÓ

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Graph each function by using its exponential form. $$f(x)=\log _{6} x$$

Short Answer

Expert verified
The graph of the function \(f(x)=\log _{6} x\) starts at the point (1,0) and increases as x increases towards infinity.

Step by step solution

01

Convert the Logarithmic Function

The logarithmic function \(f(x)=\log _{6} x\) can be written in exponential form as \(6^{f(x)}=x\). This is applying the fact that \(\log _{b} a = c\) is the same as \(b^c=a\). Thus, for every x-value, we find the corresponding y-value by calculating \(6^{f(x)}\).
02

Find some points

Substitute some x values into the converted function \(6^{f(x)}=x\) to get corresponding y values. For simplicity, often integers are chosen for the x values. Let's use x values of 1, 6 and 36, as these are easily handled by a base-6 exponential function. For x=1, \(f(x)=0\) since any number raised to the power of 0 is 1. For x=6, \(f(x)=1\) because 6 to the power of 1 is 6. For x=36, \(f(x)=2\) because 6 to the power of 2 is 36.
03

Plot the Graph

Plot these points (1,0), (6,1) and (36,2) in a coordinate plane, then join these points and extend the curve while maintaining the shape. The resulting graph will start from the point (1,0) and will increase as x tends to infinity.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Exponential Form
The term exponential form refers to an expression where a constant base is raised to some power. It's the inverse of writing a logarithm and is crucial in work with logarithmic functions. When we deal with log functions, such as \(f(x)=\log_{6}x\), it implies the question: 'To what power should 6 be raised to produce x?'.

Let's take a closer look at this. Say we've got a number like 36, and we want to write this in exponential form with base 6. We're looking for a power, let's call it y, so that \(6^y=36\). Since 6 squared (\(6^2\)) equals 36, we say the exponential form of 36 with base 6 is \(6^2\). Changing between logarithmic and exponential forms is a vital skill as it helps with graphing and solving equations where these concepts are applied.

Understanding the exponential form of a number can significantly simplify the graphing process and allow for a deeper conceptual clarity when tackling related mathematical problems.
Logarithmic to Exponential Conversion
Converting a logarithmic equation into its exponential form is like translating between languages—it allows us to use a different perspective to solve problems. When we see a logarithmic function such as \(f(x)=\log_{6}x\), we can convert it by using the definition of a logarithm that equates it to an exponent. Here's how the conversion takes place: \(\log_{b}a = c\) implies that \(b^c=a\).

For the example from the exercise, \(f(x)=\log_{6}x\), we express this in exponential form as \(6^{f(x)}=x\). This helps us connect values of x in the original function to their corresponding y-values. It's the key step that moves us from the abstract concept of 'how many times do we multiply 6 by itself to get x' to a more tangible '6 raised to what equals x'. By mastering this conversion, students can tackle not only graphing but also intricate equations involving logarithms with greater ease and confidence.
Plotting Points on a Graph
Plotting points on a graph is a fundamental skill in graphing functions. Firstly, you'll want to find a set of points that satisfy the function equation. For logarithmic functions, after converting to exponential form, you substitute various x-values to get y-values. In our given example, once we have the exponential form \(6^{f(x)}=x\), we can plot points like (1,0), (6,1), and (36,2) corresponding to x-values of 1, 6, and 36, respectively.

Here's a crucial tip for when you're selecting points: choose x-values that make computations easy, especially when working with logarithmic functions. Using simple values based on the logarithm's base can greatly simplify your work. Once the points are identified, plot them on a coordinate plane. Then, draw a smooth curve that connects these dots, making sure to extend the curve on both ends for a complete graph. The curve demonstrates the logarithmic function's progression and provides a visual representation that can bolster a student's understanding of this mathematical concept.

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