The area of the region \(x,y):x2+4x+2 y |x+2| \ is equal to
- 7
- 24/5
- 20/3
- 5
Answer
(3) 20/3
Solution
Shift u=x+2: region u2-2 y |u|, symmetric about the y-axis; the curves meet at |u|=2.
[figure]
Area =2 02 (u-u2+2 )du=2 [2- 83+4 ]= 203
Answer: (3)
The area of the region \(x,y):x2+4x+2 y |x+2| \ is equal to
(3) 20/3
Shift u=x+2: region u2-2 y |u|, symmetric about the y-axis; the curves meet at |u|=2.
[figure]
Area =2 02 (u-u2+2 )du=2 [2- 83+4 ]= 203
Answer: (3)
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