Instructor: Shijun Zheng
Course: Spring 2023 - Calculus III (MATH2243-A-B)
Student: Jalen Wilson
Date: 07/11/24
Assignment: Sect 15.3 Enhanced Assign
1. Sketch the region bounded by the given line and curve. Then express theregion's area as an iterated double integral and evaluate the
integral.
2
The parabola x = − y and the line y = x + 20
Sketch the region. Choose the correct graph below.
A.
B.
30
C.
y
30
x
-30
y
D.
30
y
x
30
-30
-30
30
y
x
30
-30
-30
30
x
-30
-30
30
-30
Express the shaded area as an iterated integral. Select the correct choice below and fill in the answer boxes to complete your choice.
− 16
A. A =
∫
∫
0
4
B. A =
dx dy +
∫
2
−y
∫
∫
−5
y − 20
The value of the integral is
∫
243
2
dx dy
. (Simplify your answer. Type an integer or afraction.)
dx dy 2. Sketch the region bounded by the given lines. Then express theregion's area as an iterated double integral and evaluate the integral.
x
y = x, y =
2
, and y = 2
Sketch the region. Choose the correct answer below.
A.
B.
4
y
C.
y
4
2
4
2
-4
-4
-4
4
-2
y
4
2
x
4
-2
y
2
x
-8
D.
x
8
-8
-4
-2
-4
x
4
-4
-4
4
-2
8
-4
Express the shaded area as an iterated integral. Select the correct choice below and fill in the answer boxes to complete your choice.
2
A. A =
∫
∫
0
B. A =
∫
dx dy +
2
2y
∫
∫
0
y
The value of the integral is
∫
dx dy
dx dy
2
. (Simplify your answer. Type an integer or adecimal.)
3. The sum of integrals below give the area of a region in thexy-plane. Sketch theregion, label each bounding curve with itsequation, and
give the coordinates of the points where the curves intersect. Then find the area of the region.
0
8−x
∫ ∫
9
dydx +
8−x
∫ ∫
dydx
0 − x/9
− 1 − 9x
Sketch theregion, label each bounding curve with itsequation, and give the coordinates of the points where the curves intersect. Choose
the correct answer below.
A.
B.
6
y
y= −
12
x
9
-6
y
12
(1,9)
(9,1)
y
( − 1,9)
x
y=8−x
12
y = − 9x
C.
y=8−x
y = − 9x x
y=8−x
-12( − 9, − 1)
y= −
( − 1, − 9)
-12
x
9
-6
6
y = − 9x
x
-6
y= −
-6
The area of the region is
40
.
(Type an integer or a simplifiedfraction.)
2
2
4. Find the average height of the paraboloid
z = x + y over the square 0 ≤ x ≤ 2, 0 ≤ y ≤ 2.
The average height is
8
3
.
(Type an integer or a simplifiedfraction.)
x
9
(9, − 1) 12
Sect 15.3 Enhanced Assignment
of 2
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