2023W1_MATH_100B_ALL_2023W1.2Q5DY184P603.Diagnostic_Test
pdf
School
University of British Columbia *
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Course
100
Subject
Mathematics
Date
Jan 9, 2024
Type
Pages
6
Uploaded by PrivateElectronGull36
Kaitlyn Tse
2023W1
MATH
100B
ALL
2023W1
Assignment Diagnostic
Test due 09/15/2023 at 11:59pm PDT
Problem 1.
(1 point)
This problem set serves as both a review of pre-calculus mate-
rial and as a diagnostic tool to determine whether or not you are
adequately prepared for this calculus course.
The problems will be marked for
completion only
and your an-
swers will
not
affect your enrolment status. That means you don’t
have to get the answers correct, but you do have to answer all the
questions to get credit for completing the test.
It is for your own benefit to honestly assess your precalculus
knowledge. Since all your calculus tests will be written individu-
ally and will be timed, we strongly suggest that you not use any
outside sources (textbooks, online resources, peers, tutors), and
that you
time yourself at one hour
and be sure to submit all the
answers by then.
You will have only one chance to submit an answer to each prob-
lem. Before submitting each answer, you can and should
use the
”Preview Answers” button.
This will allow you to preview your
answer to ensure that the answer you have entered is the answer
you intend to submit. Once you are satisfied with your answer,
press the
”Check Answer”
button to submit your answer.
This test will not affect your enrolment status, so please take the
above advice:
individual work only, no outside resources, and
one hour limit
.
When you finish this test, your final score will indicate which pre-
calculus skills you will want to review.
Problem 2.
(1000 points)
Given the expression
p
=
2
q
+
r
qr
,
solve for
r
in terms of
p
and
q
only.
Multiple-choice: [/A/B/C/D/E/F/G/H/I]
A.
r
=
2
q
+
r
pq
F.
r
=
2
p
B.
r
=
2
q
-
p
q
-
1
G.
r
=
2
q
-
p
q
C.
r
=
2
q
pq
-
1
H.
r
=
2
pq
q
-
p
D.
r
=
pqr
-
2
q
I.
r
is canceled out so it is impossible to solve for
r
.
E.
r
=
2
pq
+
pr
q
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 3.
(1100 points)
We are given that
kx
2
+
kx
+
6
=
0. Then an expression for
x
as a
function of
k
is
Multiple-choice: [/A/B/C/D/E]
A.
x
=
-
k
±
√
k
2
-
24
2
k
B.
x
=
-
k
±
√
k
2
-
6
k
2
k
C.
x
=
-
1
2
±
√
k
-
24
2
D.
x
=
-
1
2
±
√
k
2
-
24
k
2
k
E.
x
=
-
k
±
√
k
2
-
24
k
2
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
1
Problem 4.
(1000 points)
Factor
(
x
2
-
1
)(
2
x
2
+
6
x
-
14
)
-
(
x
2
-
1
)(
x
2
+
3
x
+
4
)
.
Multiple-choice: [/A/B/C/D/E/F/G/H/I/J]
A.
(
x
-
1
)(
x
+
1
)(
x
-
2
)(
x
-
5
)
F.
(
x
-
1
)(
x
+
1
)(
x
+
1
)(
x
-
10
)
B.
(
x
-
1
)(
x
+
1
)(
x
-
2
)(
x
+
5
)
G.
(
x
-
1
)(
x
+
1
)(
x
-
3
)(
x
-
6
)
C.
(
x
-
1
)(
x
+
1
)(
x
+
2
)(
x
-
5
)
H.
(
x
-
1
)(
x
+
1
)(
x
-
3
)(
x
+
6
)
D.
(
x
-
1
)(
x
+
1
)(
x
+
2
)(
x
+
5
)
I.
(
x
-
1
)(
x
+
1
)(
x
+
3
)(
x
-
6
)
E.
(
x
-
1
)(
x
+
1
)(
x
-
1
)(
x
+
10
)
J.
(
x
-
1
)(
x
+
1
)(
x
+
3
)(
x
+
6
)
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 5.
(200 points)
Which of the following describes all the values of
x
satisfying
x
2
+
4
≥
5?
Multiple-choice: [/A/B/C/D/E/F/G/H/I/J]
A.
x
≥
1
F.
x
≥ ±
3
B.
x
≥ ±
1
G.
-
3
≤
x
≤
3
C.
-
1
≤
x
≤
1
H.
x
≤ -
3 or
x
≥
3
D.
x
≤ -
1 or
x
≥
1
I.
all
x
∈
R
E.
x
≥
3
J.
no real solutions for
x
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 6.
(10 points)
Consider the graph of the function
y
=
f
(
t
)
as drawn below. If
f
(
-
x
) =
3, find
x
.
Click the image for a larger version.
x
=
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 7.
(10 points)
Let
f
(
x
) = (
3
x
2
-
1
)
7
be a composite function. Which is the cor-
rect decomposition of
f
(
x
)
?
Multiple-choice: [/A/B/C/D/E/F/G/H]
A.
a
(
x
) =
3
x
2
-
1
,
b
(
x
) =
x
7
,
f
(
x
) =
b
(
a
(
x
))
F.
a
(
x
) =
3
x
7
,
b
(
x
) =
x
2
-
1
,
f
(
x
) =
B.
a
(
x
) =
3
x
7
,
b
(
x
) =
x
2
-
1
,
f
(
x
) =
a
(
b
(
x
))
G.
a
(
x
) =
3
x
-
1
,
b
(
x
) =
x
9
,
f
(
x
) =
C.
a
(
x
) =
3
x
2
-
1
,
b
(
x
) = (
3
x
2
-
1
)
7
,
f
(
x
) =
b
(
a
(
x
))
H.
None of these
D.
a
(
x
) =
3
x
2
-
1
,
b
(
x
) =
x
7
,
f
(
x
) =
a
(
b
(
x
))
E.
a
(
x
) =
3
x
2
-
1
,
b
(
x
) = (
3
x
2
-
1
)
7
,
f
(
x
) =
a
(
b
(
x
))
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
2
Problem 8.
(110 points)
For what value(s) of
x
do the curve
y
=
4
x
2
+
6
x
-
4 and the line
y
=
2
x
-
1 intersect?
If your answer contains more than one value, please use a
comma to separate the values.
If the two curves do not intersect, enter ”DNI”.
x
=
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 9.
(110 points)
The graph of the quadratic function
y
=
ax
2
+
2
x
+
c
has
x
-
intercepts
-
2 and 3 and
y
-intercept 12. Find
a
and
c
.
a
=
c
=
Answer(s) submitted:
•
no response
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 10.
(10 points)
Consider the function
y
=
f
(
x
)
drawn below:
(click on image to enlarge)
On a separate piece of paper, sketch an accurate graph of the func-
tion
y
=
-
2
f
(
-
x
)
. Which (if any) of the graphs below matches
the graph you drew?
•
A.
(click on image to enlarge)
•
B.
•
C.
(click on image to enlarge)
•
D.
(click on image to enlarge)
•
E.
(click on image to enlarge)
•
F.
(click on image to enlarge)
3
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•
G. None of the above
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 11.
(1000 points)
Which of the following is equal to
2
√
6
-
√
2
?
Multiple-choice: [/A/B/C/D/E/F/G/H/I/J]
A.
1
√
3
+
√
1
F.
√
3
-
√
1
B.
1
√
3
-
√
1
G.
√
6
+
√
2
2
C.
√
6
+
√
2
4
H.
√
6
-
√
2
2
D.
√
6
-
√
2
4
I.
1
E.
√
3
+
√
1
J.
1
2
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 12.
(2000 points)
The length of a rectangular garden is 10 meters longer than its
width. If the garden’s perimeter is 212 meters, what is the area of
the garden in square meters?
m
2
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 13.
(10 points)
The domain of the function
f
(
x
) =
x
2
-
16
x
2
+
3
x
is
Multiple-choice: [/A/B/C/D/E/F/G/H/I/J]
A.
-
3
<
x
<
0
F.
x
6
=
0
B.
x
<
-
3 or
x
>
0
G.
x
6
=
-
3
C.
x
≥ -
3
H.
x
6
=
0 and
x
6
=
-
3
D.
x
<
-
4 or
x
>
4
I.
x
6
=
-
4 and
x
6
=
4
E.
x
>
-
3
J.
x
6
=
0
,
x
6
=
-
3
,
x
6
=
-
4 and
x
6
=
4
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 14.
(10 points)
The values of
f
(
x
)
at a few points are given in the table below.
Find
f
(
f
(
3
))
.
x
-3
-2
-1
0
1
2
3
f
(
x
)
0
-3
1
2
3
1
-2
f
(
f
(
3
)) =
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 15.
(10 points)
The figure below shows the graph of
a
(
x
)
in blue and the graph of
b
(
x
)
in red:
Based on the figure above, graph the function
c
(
x
) =
a
(
x
)
·
b
(
x
)
.
Hint: There is not enough information to determine formulas for
a
(
x
)
and b
(
x
)
, but you do have enough information to sketch a
graph whose main features are reflected below.
Which of the graphs below labeled A-E most accurately matches
your graph?
(enter the corresponding letter)
None of these graphs
A
B
C
D
E
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
4
Problem 16.
(1000 points)
Simplify
3
2
+
h
-
3
h
h
.
Multiple-choice: [/A/B/C/D/E/F/G/H/I/J]
A.
2
h
-
6
h
(
2
+
h
)
F.
2
h
-
6
h
B.
2
h
-
6
2
+
h
G.
-
6
h
C.
6
h
H.
-
6
h
(
2
+
h
)
D.
-
6
h
2
(
2
+
h
)
I.
2
h
-
6
h
2
(
2
+
h
)
E.
3
2
h
J.
-
6
2
+
h
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 17.
(1000 points)
Simplify
x
1
/
2
y
(
xy
-
3
)
2
.
Multiple-choice: [/A/B/C/D/E/F/G/H/I]
A.
y
7
F.
y
2
x
3
/
2
B.
y
7
x
4
G.
1
y
5
C.
y
7
x
3
/
2
H.
1
x
4
y
5
D.
y
2
I.
1
x
3
/
2
y
5
E.
y
2
x
4
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 18.
(100 points)
Solve the following equation. If necessary, enter your answer as
an expression involving natural logarithms or as a decimal approx-
imation that is correct to at least five decimal places.
12
e
x
-
15
=
13
x
=
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 19.
(200 points)
Which of the following expression is the correct relation between
the area of a circle,
A
, and its circumference,
C
?
Multiple-choice: [/A/B/C/D/E/F/G/H/I/J]
A.
A
=
C
2
2
π
F.
A
=
4
π
C
2
B.
A
=
C
2
4
π
G.
A
=
π
C
C.
A
=
C
π
H.
A
=
2
π
C
D.
A
=
C
2
π
I.
A
=
C
2
2
E.
A
=
π
C
2
J.
A
=
C
2
4
Answer(s) submitted:
•
no response
submitted: (incorrect)
recorded: (incorrect)
5
Problem 20.
(4 points)
Consider the angle
θ
, which is labeled as
Q
in blue on the
graph, with corresponding point
P
on the circle.
Select the point on the circle that best corresponds to
each angle.
Angle
Point
3
π
2
-
θ
?
π
2
-
θ
?
π
+
θ
?
π
2
+
θ
?
(Click on graph to enlarge)
Answer(s) submitted:
•
no response
•
no response
•
no response
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 21.
(4 points)
If tan
(
θ
) =
24
7
, 0
≤
θ
≤
π
/
2, then
sin
(
θ
)
equals
cos
(
θ
)
equals
sec
(
θ
)
equals
Answer(s) submitted:
•
no response
•
no response
•
no response
submitted: (incorrect)
recorded: (incorrect)
Problem 22.
(1 point)
Congratulations! You have now completed the diagnostic test.
To see your score, click on the ”Grades” tab on the left. To in-
terpret your score, copy and paste the 4-digit number into the box
here:
https://ubc.github.io/math-score/
.
The result will map your score to each of the four precalcu-
lus modules:
Basic Algebra, Adanced Algebra, Functions and
Graphs, and Triangles and Trigonometry. It will tell you which
of these topics require your attention in the
Precalculus Review -
2023W
Course:
https://canvas.ubc.ca/courses/136967
.
(This is a separate course in which you must also be enrolled.
If you’re not enrolled in this course,
you can do so here:
https://canvas.ubc.ca/enroll/YLKAWH
)
You are highly encouraged to review the Precalculus Review top-
ics in which you require practice, as indicated by your diagnostic
test score.
Generated by ©WeBWorK, http://webwork.maa.org, Mathematical Association of America
6
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