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LiRa [457]
3 years ago
5

Farmer Jones, and his wife, Dr. Jones, decide to build a fence in their field, to keep the sheep safe. Since Dr. Jones is a math

ematician, she suggests building fences described by y = 10 x 2 and y = x 2 + 2 . Farmer Jones thinks this would be much harder than just building an enclosure with straight sides, but he wants to please his wife. What is the area of the enclosed region?

Mathematics
1 answer:
NISA [10]3 years ago
3 0

Answer:A=\frac{14}{9}\cdot \sqrt{2}\ unit^2

Step-by-step explanation:

Given

Two curves are given

y=10 x^2

and y=x^2+2

the two curves intersect at

10x^2=x^2+2

x=\pm \frac{\sqrt{2}}{3}

to get the we need to integrate the curves over x axis

A=\int_{-\frac{\sqrt{2}}{3}}^{\frac{\sqrt{2}}{3}}\left ( x^2+3-10x^2\right )dx

A=2\int_{0}^{\frac{\sqrt{2}}{3}}\left ( 3-9x^2\right )dx

A=2\left [ 3\left ( \frac{\sqrt{2}}{3}\right )-\frac{9}{3}\left ( \frac{\sqrt{2}}{3}\right )^3\right ]

A=2\sqrt{2}\left [ 1-\frac{2}{9}\right ]

A=\frac{14}{9}\cdot \sqrt{2}\ unit^2

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