APPM 1350 Summer 2009 Final Exam in Calculus, Exams of Calculus for Engineers

A final exam in calculus for the course appm 1350, held during the summer of 2009. The exam covers various topics such as limits, derivatives, integrals, and trigonometric identities. Students are required to work all problems on the exam, show their work, and are not allowed to use textbooks, class notes, calculators, or crib sheets.

Typology: Exams

2012/2013

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APPM 1350 FINAL EXAM SUMMER 2009
On the front of your bluebook write: (1) your name, (2) your student ID number, and (3) a
grading table. You must work all of the problems on the exam. SHOW ALL YOUR WORK in
your bluebook and BOX in your final answers. A correct answer with no relevant work may
receive no credit, while an incorrect answer accompanied by some correct work may receive partial
credit. Text books, class notes, calculators and crib sheets are NOT permitted. Please start each
new problem on a new page of the bluebook.
1. (50 points, 5 points each) For each of the follwing unrelated statements, answer TRUE or
NOT NECESSARILY TRUE.
(a) If f0(x)0 for all xand f(0) = 0, the f(x)0 for all x.
(b) The function f(t) = sin t
t2has a continuous extension at t= 0.
(c) The derivative of the function csc2xis same as the derivative of cot2x.
(d) Zπ
π
xsin x
x2+ 1 dx = 0
(e) If fand gare continuous and f(x)g(x) for axb, then Zb
a
f(x)dx Zb
a
g(x)dx
(f) There exists a function fsuch that f(1) = 2, f(3) = 0, and f0(x)>1 for all x.
(g) If gis continuous and g(5) = 2 and g(4) = 3 then lim
x2g(4x211) = 2.
(h) All continuous functions have derivatives.
(i) All continuous functions have antiderivatives.
(j) The inverse function of y=e3xis y=1
3ln(x)
2. (25 points, 5 points each) Answer each of the following unrelated questions. No partial credit
will be awarded, and no justification is necessary.
(a) Find the average rate of change of a(r) = log10(r2+ 1) on the interval [0,3].
(b) Find the instantaneous rate of change of a(r) = log10(r2+ 1) at t= 3.
(c) Find all critical points of the function h(t) = t+9
t.
(d) Evalutate:
5
X
k=0
sin (2k+ 1)π
2
(e) State the Fundamental Theorem of Calculus, Parts I and II.
THE EXAM IS CONTINUED ON THE BACK
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On the front of your bluebook write: (1) your name, (2) your student ID number, and (3) a grading table. You must work all of the problems on the exam. SHOW ALL YOUR WORK in your bluebook and BOX in your final answers. A correct answer with no relevant work may receive no credit, while an incorrect answer accompanied by some correct work may receive partial credit. Text books, class notes, calculators and crib sheets are NOT permitted. Please start each new problem on a new page of the bluebook.

  1. (50 points, 5 points each) For each of the follwing unrelated statements, answer TRUE or NOT NECESSARILY TRUE.

(a) If f ′(x) ≥ 0 for all x and f (0) = 0, the f (x) ≥ 0 for all x. (b) The function f (t) = sin^ t t^2

has a continuous extension at t = 0. (c) The derivative of the function csc^2 x is same as the derivative of cot^2 x.

(d)

∫ (^) π

−π

x sin x x^2 + 1 dx^ = 0

(e) If f and g are continuous and f (x) ≥ g(x) for a ≤ x ≤ b , then

∫ (^) b

a

f (x) dx ≥

∫ (^) b

a

g(x) dx

(f) There exists a function f such that f (1) = −2, f (3) = 0, and f ′(x) > 1 for all x. (g) If g is continuous and g(5) = 2 and g(4) = 3 then lim x→ 2 g(4x^2 − 11) = 2. (h) All continuous functions have derivatives. (i) All continuous functions have antiderivatives. (j) The inverse function of y = e^3 x^ is y =^1 3

ln(x)

  1. (25 points, 5 points each) Answer each of the following unrelated questions. No partial credit will be awarded, and no justification is necessary.

(a) Find the average rate of change of a(r) = log 10 (r^2 + 1) on the interval [0, 3]. (b) Find the instantaneous rate of change of a(r) = log 10 (r^2 + 1) at t = 3.

(c) Find all critical points of the function h(t) = t +

t.

(d) Evalutate:

∑^5

k=

sin (2k^ + 1) 2 π

(e) State the Fundamental Theorem of Calculus, Parts I and II.

THE EXAM IS CONTINUED ON THE BACK

  1. (30 points) Evaluate each of the following limits, if it exists. If the limit does not exist, state this and state your justification. Show all your work.

(a) (^) xlim→ 0 x^ sin^ x 1 − cos x (b) lim z→ 0 +^

z^1 −z

(c) (^) hlim→ 0

h

∫ (^) h

0

arccos t 1 + t^2 dt

  1. (30 points) Find dydx in each case. No simplification is necessary.

(a) y = (arcsin x) [ln (arctan x)]

(b) y = e

x^2 x

(c) y = sin

(^2) x tan (^4) x (x^2 + 1)^2

  1. (30 points) Evaluate each of the following integrals.

(a)

(tan x)−^3 /^2 sec^2 x dx

(b)

∫ (^) ln 16

0

et/^4 dt

(c)

x(1 + (ln x)^2 )

dx

  1. (20 points)
  2. (15 points)

Complete 2 of the following 3 problems (A, B, and C). Select either problem A, B, or C to be Q6 (worth 20 points), and one of the remaining two problems to be Q7 (worth 15 points). You MUST identify in your bluebook either A, B, or C for each of Q6 and Q7. Failure to do so will result in the WORST-CASE scenario point distribution!

A. If f is a continuous function such that ∫ (^) x

0

f (t) dt = xe^2 x^ +

∫ (^) x

0

e−tf (t) dt

for all x, find an explicit formula for f (x). B. For what values of k does the function y = ekx^ satisfy the equation y′′^ + 6y′^ + 8 = 0? C. Find the linearization of f (x) = ln(1 + 3x) around c = 0. Use it to give an approximate value of ln(1.03).

EXTRA CREDIT: (2 points each)

  1. Name one of the places Erin traveled to over the summer. (3 options!)
  2. Where did Brutz go when he missed recitation?
  3. What is one of Erin’s favorite cartoons? (2 options!)
  4. How many people came to recitation on July 16?
  5. Which end of the chalkboard do the erasers always end up on by the end of lecture?