Area between Curves: Find 1st Quadrant

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Discussion Overview

The discussion focuses on finding the area of a region in the first quadrant bounded by the line \(y=x\), the line \(x=2\), and the curve \(y=\frac{1}{x^2}\). The scope includes mathematical reasoning and integration techniques.

Discussion Character

  • Mathematical reasoning

Main Points Raised

  • One participant proposes the integral \(\int_{1}^{2}\left(x-\frac{1}{{x}^{2}}\right) \,dx\) as a method to find the area.
  • Another participant expresses agreement with the proposed approach.
  • A third participant claims that the area evaluates to 1, suggesting that the calculation is straightforward.
  • A later reply provides a detailed calculation of the integral, confirming the area as 1, but adds a note of uncertainty with "Yep...you are correct. (Mmm)"

Areas of Agreement / Disagreement

Participants generally agree on the method and the result of the area being 1, although there is a hint of uncertainty in the final confirmation.

Contextual Notes

There may be assumptions regarding the bounds of integration and the behavior of the functions involved that are not explicitly stated.

karush
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Find the area of the region in the first quadrant
bounded by the line $y=x$, the line $x=2$, the curve $y=\frac{1}{x^2}$

$$\int_{1}^{2}\left(x-\frac{1}{{x}^{2}}\right) \,dx$$
just seeing if this is the way to go.

View attachment 4495
 
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Looks good to me!
 
The rest was easy the Area $ = 1$
 
Let's just see about that...

$$\int_1^2\left(x-\frac{1}{{x}^{2}}\right)\,dx=\left[\frac{x^2}{2}+\frac{1}{x}\right]_1^2=\left(2+\frac{1}{2}\right)-\left(\frac{1}{2}+1\right)=1$$

Yep...you are correct. (Mmm)
 

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