Math Problem Statement

e^(x+1)=10^2x

Solution

To solve the equation e(x+1)=102xe^{(x+1)} = 10^{2x}, we can approach it by taking the natural logarithm (ln) on both sides of the equation to simplify the exponents. Here's the step-by-step solution:

Step 1: Take the natural logarithm of both sides

ln(ex+1)=ln(102x)\ln(e^{x+1}) = \ln(10^{2x})

Step 2: Apply the properties of logarithms

Using the property ln(ab)=bln(a)\ln(a^b) = b\ln(a), we get:

(x+1)ln(e)=2xln(10)(x+1) \ln(e) = 2x \ln(10)

Since ln(e)=1\ln(e) = 1, the equation simplifies to:

x+1=2xln(10)x + 1 = 2x \ln(10)

Step 3: Solve for xx

Now, solve for xx:

x+1=2xln(10)x + 1 = 2x \ln(10)

Subtract xx from both sides:

1=x(2ln(10)1)1 = x (2 \ln(10) - 1)

Finally, solve for xx:

x=12ln(10)1x = \frac{1}{2 \ln(10) - 1}

Step 4: Approximate the value of xx

Using the approximation ln(10)2.3026\ln(10) \approx 2.3026, we can compute xx:

x12(2.3026)1=14.60521=13.60520.277x \approx \frac{1}{2(2.3026) - 1} = \frac{1}{4.6052 - 1} = \frac{1}{3.6052} \approx 0.277

Thus, the approximate solution is:

x0.277x \approx 0.277


Would you like a more detailed explanation or any further clarification?

Here are some related questions for deeper understanding:

  1. What happens if we solve a similar equation involving exe^x and a different base (like 2)?
  2. How can logarithmic properties simplify equations involving exponential terms?
  3. What is the natural logarithm and why is it useful in solving equations with ee?
  4. How do logarithms help in solving equations with different exponential bases (like 10 and ee)?
  5. What are the applications of solving exponential equations in real-world scenarios?

Tip: Whenever dealing with exponentials and logarithms, remember that logarithms can "bring down" exponents, making them easier to work with.

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Math Problem Analysis

Mathematical Concepts

Exponential Equations
Logarithms

Formulas

ln(a^b) = b * ln(a)
ln(e) = 1

Theorems

Logarithmic properties
Exponential functions and their properties

Suitable Grade Level

Grades 10-12