Math Problem Statement

determine the inverse of f(x)=e^5x-1

Solution

To find the inverse of the function f(x)=e5x1f(x) = e^{5x} - 1, follow these steps:

Step 1: Replace f(x)f(x) with yy

We start by writing the function as: y=e5x1y = e^{5x} - 1

Step 2: Solve for xx

Now, we need to isolate xx in terms of yy. First, add 1 to both sides: y+1=e5xy + 1 = e^{5x} Next, take the natural logarithm (ln) of both sides to remove the exponential: ln(y+1)=5x\ln(y + 1) = 5x Now, solve for xx by dividing both sides by 5: x=15ln(y+1)x = \frac{1}{5} \ln(y + 1)

Step 3: Replace yy with xx

Since we're finding the inverse, we replace yy with xx, giving the inverse function: f1(x)=15ln(x+1)f^{-1}(x) = \frac{1}{5} \ln(x + 1)

Thus, the inverse of the function f(x)=e5x1f(x) = e^{5x} - 1 is: f1(x)=15ln(x+1)f^{-1}(x) = \frac{1}{5} \ln(x + 1)

Do you want more details or have any questions? Here are 5 related questions for practice:

  1. What is the domain of the inverse function f1(x)f^{-1}(x)?
  2. How do you find the inverse of a logarithmic function?
  3. What is the range of f(x)=e5x1f(x) = e^{5x} - 1?
  4. Can you find the derivative of f1(x)f^{-1}(x)?
  5. What happens to the graph of a function when you take its inverse?

Tip: Always check that the function is one-to-one before finding its inverse, as not all functions have inverses.

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Math Problem Analysis

Mathematical Concepts

Inverse Functions
Exponential Functions
Logarithms

Formulas

f(x) = e^{5x} - 1
f^{-1}(x) = \frac{1}{5} \ln(x + 1)

Theorems

Properties of Exponential Functions
Logarithmic Identity: \ln(e^x) = x

Suitable Grade Level

Grades 11-12