Math Problem Statement

Convert each logarithmic equation into exponential form. Convert each exponential equation into logarithmic form. Determine the inverse of the function y = -log(x - 1) + 2.

Solution

Let's go through the math problems one by one:

3. Convert each logarithmic equation into exponential form.

a. log10,000=4\log 10,000 = 4

To convert this logarithmic equation into exponential form, recall that logb(a)=c\log_b(a) = c means bc=ab^c = a.

Here, the base bb is 10 (since it's a common logarithm), a=10,000a = 10,000, and c=4c = 4.

104=10,00010^4 = 10,000

b. ln3=y\ln 3 = y

The natural logarithm ln\ln has a base of ee, so we use ee as the base.

ey=3e^y = 3

c. log2(x)=1\log_2(x) = -1

Here, the base bb is 2, a=xa = x, and c=1c = -1.

21=x    12=x2^{-1} = x \implies \frac{1}{2} = x

4. Convert each exponential equation into logarithmic form.

a. 32=193^{-2} = \frac{1}{9}

Using the relationship bc=alogb(a)=cb^c = a \Rightarrow \log_b(a) = c:

log3(19)=2\log_3\left(\frac{1}{9}\right) = -2

b. e3=20.0855e^3 = 20.0855

Here, b=eb = e, c=3c = 3, and a=20.0855a = 20.0855:

ln(20.0855)=3\ln(20.0855) = 3

5. Determine the inverse of the following function.

y=log(x1)+2y = -\log(x - 1) + 2

To find the inverse of a function, follow these steps:

  1. Replace yy with xx and solve for yy:

x=log(y1)+2x = -\log(y - 1) + 2

  1. Isolate the logarithm term:

x2=log(y1)x - 2 = -\log(y - 1)

  1. Multiply both sides by -1:

(x2)=log(y1)    log(y1)=2x-(x - 2) = \log(y - 1) \implies \log(y - 1) = 2 - x

  1. Convert to exponential form:

102x=y110^{2-x} = y - 1

  1. Solve for yy:

y=102x+1y = 10^{2-x} + 1

So, the inverse function is:

f1(x)=102x+1f^{-1}(x) = 10^{2-x} + 1

Would you like more details on any of these solutions, or do you have any further questions?

Related Questions

  1. What is the exponential form of log5(25)=2\log_5(25) = 2?
  2. How would you solve log4(x)=3\log_4(x) = 3 for xx?
  3. What is the logarithmic form of 25=322^5 = 32?
  4. How do you find the inverse of y=ln(x)+3y = \ln(x) + 3?
  5. If logb(x)=5\log_b(x) = 5, how do you express xx in exponential form?

Tip

When converting between logarithmic and exponential forms, remember that logb(a)=c\log_b(a) = c is equivalent to bc=ab^c = a. This simple rule is key to understanding and solving many logarithmic and exponential problems.

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Math Problem Analysis

Mathematical Concepts

Logarithms
Exponential Functions
Inverse Functions

Formulas

Logarithmic to Exponential: log_b(a) = c is equivalent to b^c = a
Exponential to Logarithmic: b^c = a is equivalent to log_b(a) = c
Inverse Function: Solving f(x) for x in terms of y

Theorems

Logarithm and Exponential Relationship Theorem
Inverse Function Theorem

Suitable Grade Level

Grades 10-12