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Numner 4 find the area of the shared region analytically

Numner 4 find the area of the shared region analytically-example-1
User Franz Noel
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2 Answers

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The area of the shared region between the curves
\( x = 12y^2 - 12y^3 \) and
\( x = 2y^2 - 2y \) from
\( y = 0 \) to
\( y = 1 \) is approximately \( 1.33 \) square units when rounded to the nearest hundredth.

To find the area of the shared region analytically between the curves
\( x = 2y^2 - 2y \) and
\( x = 12y^2 - 12y^3 \), we will need to set up an integral with the proper bounds.

The shared region looks to be bound between
\( y = 0 \) and
\( y = 1 \). We will integrate with respect to
\( y \), subtracting the left curve from the right curve to get the area between them.

The integral to find the area
\( A \) of the shared region is:


\[ A = \int_(0)^(1) [(12y^2 - 12y^3) - (2y^2 - 2y)] \, dy \]

Let's perform this integral step-by-step.

The area of the shared region between the curves
\( x = 12y^2 - 12y^3 \) and
\( x = 2y^2 - 2y \) from
\( y = 0 \) to
\( y = 1 \) is approximately
\( 1.33 \) square units when rounded to the nearest hundredth.

User Strongjz
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We will have the following:


A=\int ^1_0(12y^2-12y^3)\partial y-\int ^1_0(2y^2-2y)\partial y\Rightarrow A=\int ^1_0(12y^2)\partial y-\int ^1_0(12y^3)\partial y-\int ^1_0(2y^2)\partial y+\int ^1_0(2y)\partial y

Here we remember that the antiderivative follows:


\int abn^(b-1)\partial n=an^b+c

So, we will have:


A=(4y^3|^1_0-(3y^4|^1_0-((2)/(3)y^3|^1_0+(y^2|^1_0
\Rightarrow A=(4(1)^3-4(0)^3)-(3(1)^4-3(0)^4)-((2)/(3)(1)^3-(2)/(3)(0)^3)+(1^2-0^2)
\Rightarrow A=4-3-(2)/(3)+1\Rightarrow A=(4)/(3)

So, the area between the two lines is of 4/3 square units.

User Valicos
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