Math Problem Statement

Reši nalogo.

Solution

The problem in the image appears to be in Slovenian. The task is to find the indefinite integral:

3x+1x2dx\int \frac{3x+1}{x^2} \, dx

Let's solve this step by step.

First, rewrite the integrand:

3x+1x2=3xx2+1x2=3x+x2\frac{3x+1}{x^2} = \frac{3x}{x^2} + \frac{1}{x^2} = \frac{3}{x} + x^{-2}

Now, split the integral:

(3x+x2)dx=3xdx+x2dx\int \left( \frac{3}{x} + x^{-2} \right) \, dx = \int \frac{3}{x} \, dx + \int x^{-2} \, dx

Integrate each term separately:

3xdx=3lnx+C1\int \frac{3}{x} \, dx = 3 \ln |x| + C_1

x2dx=x2dx=x1+C2=1x+C2\int x^{-2} \, dx = \int x^{-2} \, dx = -x^{-1} + C_2 = -\frac{1}{x} + C_2

Combine the results and include the constant of integration CC:

3lnx1x+C3 \ln |x| - \frac{1}{x} + C

So, the final answer is:

3x+1x2dx=3lnx1x+C\int \frac{3x+1}{x^2} \, dx = 3 \ln |x| - \frac{1}{x} + C

Would you like any details or have any questions?

Here are 5 related questions to expand on this information:

  1. How do you handle integration when dealing with polynomials in the denominator?
  2. What are some common techniques for integrating rational functions?
  3. How do you integrate functions involving logarithms?
  4. What are the properties of logarithmic functions that are useful in integration?
  5. How do you determine the constant of integration when given initial conditions?

Tip: When dealing with integrals involving rational functions, it can be helpful to simplify the integrand first, such as by using algebraic manipulation to split fractions or rewrite terms in a more integrable form.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Integration
Rational Functions
Logarithms

Formulas

Integral of rational functions
Integral involving logarithms

Theorems

-

Suitable Grade Level

Advanced High School