Test Version: A
Math 1206
Common Final Exam
Test Version: A
Spring 2014
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Mark your answers to the test questions in rows 1 - 14 of the op scan sheet. Your score on this test will be the number of correct answers. You have one hour to complete this portion of the exam. Turn in the op scan sheet with your answers and the question sheets at the end of this part of the final exam.
Exam Policies: You may not use a book, notes, formula sheet, calculator or a computer. Giving or receiving unauthorized aid is an Honor Code Violation.
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1. Find f (x) if f (x) = 1
(A) ln(x)
3 2t
dt. Assume x > 1.
x
ln(t2)
-2 x
(B)
ln(x)
-1 (C) ln(x)
e
4dx
2. Evaluate 1 x (1 + (ln x)2)
(A) 4 ln(2)
(B) 4 ln(2e)
(C) 4
2x (D) ln(x) (D)
3. Find the area between the curves y = x2 - 2x and y = x.
(A) 4.5
(B) 2.5
(C) 12
(D) 22.5
4. In the xy-plane, a 3-g mass is at (1, 3), and a 2-g mass is at (2, 1). Determine where a 1-g mass should be placed in order that the center of mass of the resulting system be at the origin.
(A) (-7, -11)
(B) (-5, -7)
(C) (-5, -6)
(D) (-4, -8)
5. Evaluate x-2 ln(x) dx.
(A)
1
1
ln(x) - + C
x2
x
(C)
1
1
ln(x) + + C
x
x
6. Evaluate 9 - x2 1/2 dx.
(A) 3 (9 - x2)3/2 sin-1 x + C
4
3
(C)
x2 3x - + C
2
1
7.
dx equals
x2 - x - 2
1 x-2
(A)
+C
2 x+1
1 x-2
(C) ln
+C
3 x+1
8. Evaluate (A) 5
3
|x - 2| dx.
-1
(B) -4
(B)
1
1
- ln(x) - + C
x
x
(D)
2
1
- x3 ln(x) + x3 + C
(B) 3 sin-1 x + C
2
3
(D)
1 x9
-
x2
+
9
sin-1
x
+C
2
2
3
(B) ln |(x - 2)(x + 1)| + C
(D)
1
2
ln |x - 2| + ln |x + 1| + C
3
3
(C) 4
(D) 6
9. Let f (x) be a differentiable function whose graph passes through the point (1, 4) and whose slope for each x 0 is given by 3 x. Find f (4).
(A) 1
(B) 6
(C) 18
(D) 20
1 - cos x + x sin x 10. Evaluate lim
x0 1 - cos x
(A) -1
(B) e3
11. Evaluate
2xex2 dx.
-
(A) 0
(B) 1 2
(C) 3 (C) e
(D) Does not exist
(D)
Integral diverges
12. A toy rocket is launched from the ground level (x = 0, y = 0) and due to the wind it falls some distance away from the launch site. The trajectory of the rocket is described by the curve
y = 10x(4 - x2).
Determine the distance s covered by the rocket from the launch moment to the moment it hits the ground.
2
(A) s =
1 - (40x - 10x3)2 dx
0
2
(B) s =
1 + (40 - 30x2)2 dx
0
2
(C) s =
3
1 + (40 - 30x2) dx
0
2
(D) s =
3
1 + (40x - 10x3)2 dx
0
13. A region bounded by the curves
x2 y=
and
y = 5 - x2
4
is revolved around the line y = -1. Find the volume of the generated solid using disk-washer method.
5
(A) V =
-1
5 - y 2 - (2y)2 dy
(B) V =
2
4 - x2 2 -
x2
2
-1
dx
-2
4
(C) V = 5 1 + 5 - y 2 - (1 + 2y)2 dy
0
(D) V =
2
6 - x2 2 -
x2
2
+1
dx
-2
4
14. An elevator weighs 1000 lbs and is suspended at the bottom end of a 200-foot cable. The cable weighs 5 lb/ft. An electric motor at the top of the elevator shaft winds 190 ft of cable to lift the elevator from the ground floor to the top floor. Which integral represents the amount of work done by the electric motor?
190
(A) W = 190 ? 2000 = 2000 dy
0
190
190
(B) W = 190 ? 1000 + 5(200 - y) dy = (1000 + 5(200 - y)) dy
0
0
200
200
(C) W = 190 ? 1000 + 5(190 - y) dy = (1000 + 5(190 - y)) dy
10
10
190
190
(D) W = 190 ? 1000 + 5y dy = (1000 + 5y) dy
0
0
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