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Calculus I (UN1101) Practice Final A Instructor: Robin Zhang
Student Name (UNI):
Instructions:
This exam contains 10 pages (including this cover page) and 6 questions. The total number of possible
points is 80 points. You will have 150 minutes to complete this exam.
Print your name and UNI in the space above.
Answer the questions in the space provided on
the question sheets. You may use extra paper.
Clearly identify and simplify your answers.
You will not receive full credit if there are multiple
apparent answers, even if one of them is correct.
Write legibly and show your work. You may
receive partial credit for intermediate steps. Correct
answers without any reasoning or work will not re-
ceive full credit.
No calculators, computational devices, or con-
sulting other people during the duration of this
exam. Any cheating will result in an automatic fail-
ing grade in the course and potential administrative
action.
You may consult your notes and textbook
for this exam. This does not include WebAssign,
Courseworks, or other online resources.
Upload your exam to Gradescope via PDF or
images at the end of the time allotted. At the end of
the exam, you have 15 minutes to upload your exam.
Any exams uploaded after the end of the upload pe-
riod will not be accepted.
Remain in the Zoom call with your camera.
If you need to leave your work area for any reason,
please inform the instructor beforehand.
Do not write in the table to the right.
Question Points Score
1 12
2 16
3 21
4 9
5 16
6 6
Total: 80
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Calculus I (UN1101) Practice Final A Instructor: Robin Zhang

Student Name (UNI):

Instructions:

This exam contains 10 pages (including this cover page) and 6 questions. The total number of possible points is 80 points. You will have 150 minutes to complete this exam.

  • Print your name and UNI in the space above.
  • Answer the questions in the space provided on the question sheets. You may use extra paper.
  • Clearly identify and simplify your answers. You will not receive full credit if there are multiple apparent answers, even if one of them is correct.
  • Write legibly and show your work. You may receive partial credit for intermediate steps. Correct answers without any reasoning or work will not re- ceive full credit.
  • No calculators, computational devices, or con- sulting other people during the duration of this exam. Any cheating will result in an automatic fail- ing grade in the course and potential administrative action.
  • You may consult your notes and textbook for this exam. This does not include WebAssign, Courseworks, or other online resources.
  • Upload your exam to Gradescope via PDF or images at the end of the time allotted. At the end of the exam, you have 15 minutes to upload your exam. Any exams uploaded after the end of the upload pe- riod will not be accepted.
  • Remain in the Zoom call with your camera. If you need to leave your work area for any reason, please inform the instructor beforehand.

Do not write in the table to the right.

Question Points Score

1 12

2 16

3 21

Total: 80

  1. Consider the function

f (x) =

sin(x) if x > ⇡ x ⇡ if x  ⇡

(a) (4 points) Identify the real numbers at which f (x) is discontinuous. Hint: You should justify why f (x) is discontinuous at certain values of x and why f (x) is continuous everywhere else.

(b) (4 points) Identify the horizontal and vertical asymptotes of f (x).

(c) (4 points) What does the Mean Value Theorem say about f (x) on the interval [2⇡, 3 ⇡]?

  1. Consider the function

f (x) = 2x 3 + 9x 2 + 12x + 1.

(a) (3 points) State the domain and range of the function f (x).

(b) (4 points) Find f 0 (x) and f 00 (x).

(c) (5 points) Find the local extrema of f (x).

(d) (4 points) Find all of the values of x where f (x) has an inflection point.

  1. The spread of a rumor over time within a town with a population of 12000 people can be modeled by a logistic function R(t) =

1 + e t^

The logistic function R(t) gives the number of people at time t who have heard the rumor. (a) (6 points) Find the linearization of R(t) at t = 0.

(b) (3 points) Use linear approximation at t = 0 to estimate the number of people in the town who have heard the rumor at time t = 1.

  1. Consider the curve y = x 3 + x.

(a) (5 points) Approximate the area under the curve between x = 0 and x = 4 by a Riemann sum of four rectangles using right endpoints.

(b) (4 points) Express the area under the curve as the limit of a Riemann sum. You do not need to evaluate the area for this part. You can leave your answer as a limit.

  1. (6 points) Evaluate Z 2 cos 2 (t)

s 6 +

sin(t) cos(t)

  • t

dt.