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Write each logarithmic equation in its equivalent exponential form. $$\log _{2}\left(\frac{1}{32}\right)=-5$$

Short Answer

Expert verified
The exponential form is \( 2^{-5} = \frac{1}{32} \).

Step by step solution

01

Understanding the Logarithmic Equation

The logarithmic equation is \( \log_2\left(\frac{1}{32}\right) = -5 \). This means "2 raised to the power of what number equals \( \frac{1}{32} \)?" The answer is \(-5\).
02

Converting to Exponential Form

To convert the logarithmic equation to its equivalent exponential form, use the definition of logarithms: \( \log_b(a) = c \) is equivalent to \( b^c = a \). Here, the base \( b \) is 2, the answer \( c \) is \(-5\), and \( a \) is \( \frac{1}{32} \).
03

Writing the Exponential Equation

Apply the conversion from the previous step: \( 2^{-5} = \frac{1}{32} \). This verifies that raising the base 2 to the power \(-5\) results in \( \frac{1}{32} \).

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Key Concepts

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

Exponential Form
Understanding the exponential form is essential when dealing with logarithms. Exponential form expresses a repeated multiplication of a number, known as the base. The general format for exponential expressions is \(b^c = a\). Here, \(b\) represents the base, \(c\) indicates the exponent, and \(a\) is the result of the base raised to that exponent.
Exponents signify how many times the base is multiplied by itself. For example, in the expression \(2^3\), 2 is multiplied by itself three times to get 8. In mathematical terms, \(2^3 = 2 \times 2 \times 2 = 8\).
This concept is pivotal in converting logarithmic equations, where understanding how the exponential form reconstructs the components of a logarithmic statement is of utmost importance.
Base of a Logarithm
The base of a logarithm is a critical component in understanding logarithmic equations. It specifies the number that is being raised to a power to achieve a certain result. In any logarithmic equation given in the form \(\log_b(a) = c\), \(b\) is identified as the base.
Let's consider the logarithmic expression \(\log_2\left(\frac{1}{32}\right) = -5\). Here, the base is 2. It tells us that 2 must be raised to a specific power to obtain \(\frac{1}{32}\).
  • The base determines the rate at which the logarithmic function grows or decays.
  • It is crucial to pay attention to the base when solving logarithmic equations, as it will impact the entire solution process.
Understanding the base helps in accurately converting and solving the given equations.
Logarithmic to Exponential Conversion
Converting a logarithmic expression to its exponential form is an essential skill when working with logarithms. This transformation allows us to understand the relationship between the components of the expression. For example, the equation \(\log_b(a) = c\) can be rewritten in its exponential form as \(b^c = a\).
This conversion is straightforward when you remember the components:
  • \(b\) is the base,
  • \(c\) is the exponent or logarithm result,
  • \(a\) is the target number or value.
In our example, \(\log_2\left(\frac{1}{32}\right) = -5\), converting it to exponential form gives \(2^{-5} = \frac{1}{32}\).
Here, the base 2 raised to the power of \(-5\) yields \(\frac{1}{32}\). This process solidifies the understanding of the logarithmic relationship and is vital for anyone looking to manipulate such equations efficiently.

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Most popular questions from this chapter

Recall that the derivative of \(f\) can be found by letting \(h \rightarrow 0\) in the difference quotient \(\frac{f(x+h)-f(x)}{h} .\) In calculus we prove that \(\frac{e^{h}-1}{h}=1,\) when \(h\) approaches \(0 ;\) that is, for really small values of \(h, \frac{e^{h}-1}{h}\) gets very close to 1. Use this information to find the derivative of \(f(x)=e^{x}\).

Explain the mistake that is made. Solve the equation: \(4 e^{x}=9\) Solution: Take the natural log of both sides. \(\quad \ln \left(4 e^{x}\right)=\ln 9\) Apply the property of inverses. \(4 x=\ln 9\) \(x=\frac{\ln 9}{4} \approx 0.55\) Solve for \(x\) This is incorrect. What mistake was made?

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Refer to the following: In calculus, to find the derivative of a function of the form \(y=k^{x}\) where \(k\) is a constant, we apply logarithmic differentiation. The first step in this process consists of writing \(y=k^{x}\) in an equivalent form using the natural logarithm. Use the properties of this section to write an equivalent form of the following implicitly defined functions. $$y=4^{x} \cdot 3^{x+1}$$

When a person has a cavity filled, the dentist typically administers a local anesthetic. After leaving the dentist's office, one's mouth often remains numb for several more hours. If a shot of anesthesia is injected into the bloodstream at the time of the procedure \((t=0)\), and the amount of anesthesia still in the bloodstream \(t\) hours after the initial injection is given by \(A=A_{0} e^{-0.5 t}\) in how many hours will only \(10 \%\) of the original anesthetic still be in the bloodstream?

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