Math Problem Statement

El resultado que se obtiene al integrar \( \int \frac{\sqrt{x} + 4}{x} dx \)

Solution

The integral provided in the image is:

x+4xdx\int \frac{\sqrt{x} + 4}{x} \, dx

Step-by-Step Solution:

  1. Split the Integral: Rewrite the expression as two separate terms: x+4xdx=xxdx+4xdx\int \frac{\sqrt{x} + 4}{x} \, dx = \int \frac{\sqrt{x}}{x} \, dx + \int \frac{4}{x} \, dx

  2. Simplify Each Term:

    • For the first term: xx=x1/2x1=x1/2\frac{\sqrt{x}}{x} = \frac{x^{1/2}}{x^1} = x^{-1/2} So the integral becomes: x1/2dx\int x^{-1/2} \, dx Use the power rule of integration: xndx=xn+1n+1+C,for n1\int x^n \, dx = \frac{x^{n+1}}{n+1} + C, \quad \text{for } n \neq -1 Here n=1/2n = -1/2: x1/2dx=x1/21/2=2x\int x^{-1/2} \, dx = \frac{x^{1/2}}{1/2} = 2\sqrt{x}

    • For the second term: 4xdx=41xdx=4lnx\int \frac{4}{x} \, dx = 4 \int \frac{1}{x} \, dx = 4 \ln|x|

  3. Combine Results: Combine the results of the two integrals: x+4xdx=2x+4lnx+C\int \frac{\sqrt{x} + 4}{x} \, dx = 2\sqrt{x} + 4 \ln|x| + C

Final Answer:

2x+4lnx+C\boxed{2\sqrt{x} + 4 \ln|x| + C}

Let me know if you want further clarification or if you have additional questions!


Related Questions:

  1. What is the power rule of integration, and how is it applied in this problem?
  2. How do you handle integrals involving logarithms, like 1xdx\int \frac{1}{x} dx?
  3. How would the solution change if the integrand were x4x\frac{\sqrt{x} - 4}{x}?
  4. Can you generalize the integration process for x+kxdx\int \frac{\sqrt{x} + k}{x} dx, where kk is a constant?
  5. What are the domain restrictions for the function lnx\ln|x| in the integral?

Tip:

Always split integrals into simpler terms when dealing with sums or quotients, as it makes applying basic rules of integration more straightforward.

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Math Problem Analysis

Mathematical Concepts

Integral Calculus
Power Rule
Logarithmic Integration

Formulas

Power Rule for Integration: \( \int x^n dx = \frac{x^{n+1}}{n+1} + C \) for \( n \neq -1 \)
Logarithmic Integration: \( \int \frac{1}{x} dx = \ln|x| + C \)

Theorems

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Suitable Grade Level

Grades 10-12