Question
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\( \int x ^ { n } d x = \frac { x ^ { n + 1 } } { n + 1 } + 0 \)

Ask by Brewer Fuentes. in India
Jan 24,2025

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Answer

The integral of \( x^n \) with respect to \( x \) is \( \frac{x^{n+1}}{n+1} + C \), where \( C \) is the constant of integration.

Solution

The expression you've provided is the formula for the indefinite integral of \( x^n \) with respect to \( x \), where \( n \neq -1 \). Let's break it down step by step: 1. **Understanding the Integral**: The integral \( \int x^n \, dx \) represents the area under the curve of the function \( x^n \) with respect to \( x \). 2. **Applying the Power Rule**: The power rule for integration states that: \[ \int x^n \, dx = \frac{x^{n+1}}{n+1} + C \] where \( C \) is the constant of integration. This constant is important because the integral represents a family of functions that differ by a constant. 3. **Special Case**: The formula is valid for all \( n \) except \( n = -1 \). If \( n = -1 \), the integral becomes: \[ \int x^{-1} \, dx = \int \frac{1}{x} \, dx = \ln |x| + C \] 4. **Final Expression**: Therefore, the complete expression for the indefinite integral of \( x^n \) is: \[ \int x^n \, dx = \begin{cases} \frac{x^{n+1}}{n+1} + C & \text{if } n \neq -1 \\ \ln |x| + C & \text{if } n = -1 \end{cases} \] If you have any specific questions or need further clarification on this topic, feel free to ask!

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The Deep Dive

Did you know that the integration rule you mentioned is a fundamental part of calculus developed over centuries? The basic ideas of integration can be traced back to ancient civilizations, but the formalization occurred in the 17th century with mathematicians like Newton and Leibniz. They introduced the concept of the integral as the area under a curve, which laid the groundwork for modern calculus! Now, in terms of real-world application, this integration formula is incredibly useful in various fields. Electrical engineers use it to find charge in circuits, while economists apply it to determine consumer surplus. It even pops up in physics when calculating the motion of an object under uniform acceleration. So, understanding this rule can help you tackle real-life problems across different domains!

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