Let \(f(x) = \ln x \cdot \cos x\). Find \(f'(x)\).
A
\(\dfrac{1}{\cos x} \cdot (-\sin x)\)
✕
B
\(\dfrac{1}{x} \cdot (-\sin x)\)
✕
C
\(\dfrac{1}{x} \cos x - \ln x \sin x\)
✕
D
\(\dfrac{1}{x \cos x}(\cos x - x \sin x)\)
✕
E
none of the above
✕
Question 6 of 27
| MCQ
· Level 2
Let \(y = 4 e^{\tan x}\). Find \(\dfrac{d y}{d x}\).
A
\(4 e^{\tan x} \cdot \sec^2 x\)
✕
B
\(4 e^{\tan x} \cdot \dfrac{1}{1 + x^2}\)
✕
C
\(4 e^{\tan x}\)
✕
D
\(4 e^{\tan x} \cdot \cot x\)
✕
E
\(4 \sec^2 x\)
✕
Question 7 of 27
| MCQ
· Level 2
Let \(f(x) = \sin^{-1} x\). Find \(f'(0)\).
A
\(\pi\)
✕
B
\(1\)
✕
C
\(\dfrac{1}{2}\)
✕
D
\(0\)
✕
E
none of the above
✕
Question 8 of 27
| MCQ
· Level 2
The equation of the line tangent to the graph of \(f(x) = x^2 + 5 x\) at the point with x-coordinate \(x = 2\) is:
A
\(y = 9 x - 14\)
✕
B
\(y = 9 x\)
✕
C
\(y = 9 x - 4\)
✕
D
\(y = -\dfrac{1}{9} x - \dfrac{2}{9}\)
✕
E
none of the above
✕
Question 9 of 27
| MCQ
· Level 3
Let \(f(x) = x^3 - 3 x\). Which of the following statements are true? I. \(f(x)\) has local maxima at both \(x = -1\) and \(x = 1\). II. \(f(x)\) has a local minimum at \(x = 1\) and an inflection point at \(x = 0\). III. \(f(x)\) has both a local minimum and an inflection point at \(x = 0\).
A
only I is true
✕
B
only II is true
✕
C
only III is true
✕
D
only I and III are true
✕
E
none of the statements is true
✕
Question 10 of 27
| MCQ
· Level 3
A commercial nursery has \(1000\) yards of fencing which the owners plan to use to enclose as large a rectangular garden as possible. The garden will be bounded on one side by a barn, so no fencing is needed on that side. How large will the garden be (in square yards)?
A
\$125,000$ sq yds
✕
B
\$250,000$ sq yds
✕
C
\$111,088.89$ sq yds
✕
D
\$62,500$ sq yds
✕
E
none of the above
✕
Question 11 of 27
| MCQ
· Level 2
The width of a rectangle is increasing at a rate of \(2\) cm/sec, and its length is increasing at a rate of \(3\) cm/sec. At what rate is the area of the rectangle increasing when its width is \(4\) cm and its length is \(5\) cm?
A
\(31\) cm\(^2\)/sec
✕
B
\(23\) cm\(^2\)/sec
✕
C
\(5\) cm\(^2\)/sec
✕
D
\(22\) cm\(^2\)/sec
✕
E
none of the above
✕
Question 12 of 27
| MCQ
· Level 2
A rock is dropped from a height of \(400\) feet and falls toward the earth in a straight line; \(t\) seconds after it is dropped, it has fallen a distance of \(s(t) = 16 t^2\) feet. At what speed is the rock traveling when it hits the ground?
A
\(20\) ft/sec
✕
B
\(32\) ft/sec
✕
C
\(640\) ft/sec
✕
D
\(320\) ft/sec
✕
E
\(160\) ft/sec
✕
Question 13 of 27
| MCQ
· Level 3
Which of the following gives the area between the curves \(y = x^2\) and \(y = 2 x\) over the interval \([-2, 2]\)?
A
\(\displaystyle\int_{-2}^2 (x^2 - 2 x) d x\)
✕
B
\(\displaystyle\int_{-2}^2 (2 x - x^2) d x\)
✕
C
\(\displaystyle\int_{-2}^0 (x^2 - 2 x) d x + \displaystyle\int_{0}^{2} (2 x - x^2) d x\)
✕
D
\(|\displaystyle\int_{-2}^2 (x^2 - 2 x) d x|\)
✕
E
none of the above
✕
Question 14 of 27
| MCQ
· Level 4
Suppose that \(f(x)\) is a continuous function with the following properties: \(f''(x) = \cos x\), \(f'(\pi) = 2\) and \(f(0) = 4\). What is \(f(\pi)\)?
A
\(2\)
✕
B
\(2 \pi\)
✕
C
\(\pi + 2\)
✕
D
\(6 + 2 \pi\)
✕
E
\(0\)
✕
Question 15 of 27
| MCQ
· Level 3
Suppose that the function \(f(x)\) is defined by \(f(x) = \displaystyle\int_{1}^{x} \dfrac{e^t}{t} d t\). Find \(f'(x)\).
A
\(e^x \ln x\)
✕
B
\(e^x \ln x - \dfrac{e^x}{x}\)
✕
C
\(\dfrac{e^x}{x}\)
✕
D
\(\dfrac{e^x}{x} - e\)
✕
E
the integral can't be computed, so it's impossible to give the answer
✕
Question 16 of 27
| MCQ
· Level 2
Suppose that \(f(x) = \dfrac{x}{x^2 + 1}\). Find \(\displaystyle\int_{0}^{2} f'(x) d x\).
A
\(\dfrac{2}{5}\)
✕
B
\(-\dfrac{28}{25}\)
✕
C
\(\dfrac{28}{25}\)
✕
D
\(0\)
✕
E
none of the above
✕
Question 17 of 27
| MCQ
· Level 3
Which of the following statements about indefinite integrals are true? I. \(\int f(x) + g(x) d x = \int f(x) d x + \int g(x) d x\) II. \(\int f(x) g(x) d x = \int f(x) d x \cdot \int g(x) d x\) III. \(\int f'(g(x)) g'(x) d x = f(g(x)) + C\) IV. \(\int [f(x)]^n d x = \dfrac{[f(x)]^{n+1}}{n + 1} + C\)
A
only I and II are true
✕
B
only I and III are true
✕
C
only I and IV are true
✕
D
only I, II and IV are true
✕
E
only I, III and IV are true
✕
Question 18 of 27
| MCQ
· Level 3
Find the volume of the solid obtained by rotating the region bounded by \(y = x^2\) and \(y = x\) over the interval \([0, 1]\) around the x-axis.
A
\(\displaystyle\int_{0}^{1} \pi (x^2 - x^4) d x\)
✕
B
\(\displaystyle\int_{0}^{1} \pi (x - x^2)^2 d x\)
✕
C
\(\displaystyle\int_{0}^{1} \pi (x^2 - x^4)^2 d x\)
✕
D
\(\displaystyle\int_{0}^{1} \pi (\sqrt{y} - y) d y\)
✕
E
\(\displaystyle\int_{0}^{1} \pi (y - y^2) d y\)
✕
Question 19 of 27
| MCQ
· Level 2
The integral \(\int \dfrac{1}{x \ln x} d x\) can be found by
A
making the substitution \(u = \ln x\)
✕
B
making the substitution \(u = \dfrac{1}{x}\)
✕
C
using integration by parts, with \(u = \ln x\) and \(d v = x\)
✕
D
taking the reciprocal of \(\int x \ln x d x\)
✕
E
none of the above
✕
Question 20 of 27
| MCQ
· Level 2
The integral \(\int x \sin x d x\) can be found by
A
making the substitution \(u = x\)
✕
B
making the substitution \(u = \sin x\)
✕
C
using integration by parts, with \(u = \sin x\) and \(d v = x d x\)
✕
D
using integration by parts, with \(u = x\) and \(d v = \sin x d x\)
✕
E
none of the above
✕
Question 21 of 27
| MCQ
· Level 3
Find \(\displaystyle\int_{0}^{\ln \sqrt{3}} \dfrac{e^x}{1 + e^{2 x}} d x\).
Find \(\displaystyle\int_{1}^{\infty} \dfrac{1}{x^2} d x\).
A
\(1\)
✕
B
\(2\)
✕
C
\(10\)
✕
D
\(20\)
✕
E
the integral diverges
✕
Question 24 of 27
| MCQ
· Level 3
Which of the following improper integrals converge to a finite value? (I) \(\displaystyle\int_{1}^{\infty} e^{-x} d x\) (II) \(\displaystyle\int_{-\infty}^{\infty} x^3 d x\) (III) \(\displaystyle\int_{-\infty}^{\infty} \dfrac{1}{1 + x^2} d x\)
A
I only
✕
B
III only
✕
C
I and II only
✕
D
I and III only
✕
E
all of them
✕
Question 25 of 27
| MCQ
· Level 2
The second order Taylor polynomial at \(x = 0\) for \(f(x) = e^{-x}\) is
A
\(1 - \dfrac{x^2}{2}\)
✕
B
\(1 + \dfrac{x^2}{2}\)
✕
C
\(1 + x + \dfrac{x^2}{2}\)
✕
D
\(1 - x + x^2\)
✕
E
\(1 - x + \dfrac{x^2}{2}\)
✕
Question 26 of 27
| MCQ
· Level 3
Which of the following series converge? (I) \(\displaystyle\sum_{n=1}^{\infty} \dfrac{1}{n^2}\) (II) \(\displaystyle\sum_{n=1}^{\infty} \dfrac{1}{n}\) (III) \(\displaystyle\sum_{n=1}^{\infty} \dfrac{n}{2^n}\)
A
(I) only
✕
B
(III) only
✕
C
(I) and (II) only
✕
D
(I) and (III) only
✕
E
all of them
✕
Question 27 of 27
| MCQ
· Level 2
The radius of convergence of the power series \(\displaystyle\sum_{n=0}^{\infty} x^n\) is
A
\(0\)
✕
B
\(1\)
✕
C
\(2\)
✕
D
\(3\)
✕
E
\(\infty\)
✕
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Graphing Calculator
Reference Sheet
Area & Circumference
Circle$A = \pi r^2$, $C = 2\pi r$
Rectangle$A = lw$
Triangle$A = \tfrac{1}{2}bh$
Trapezoid$A = \tfrac{1}{2}(b_1+b_2)h$
Volume
Box$V = lwh$
Cylinder$V = \pi r^2 h$
Sphere$V = \tfrac{4}{3}\pi r^3$
Cone$V = \tfrac{1}{3}\pi r^2 h$
Pyramid$V = \tfrac{1}{3}lwh$
Triangles
Pythagorean Thm$a^2 + b^2 = c^2$
30-60-90sides: $1,\, \sqrt{3},\, 2$
45-45-90sides: $1,\, 1,\, \sqrt{2}$
Triangle Anglessum $= 180°$
Other Facts
Circle Degrees$360° = 2\pi \text{ rad}$
Exterior Angle= sum of non-adjacent interior angles
The number of degrees of arc in a circle is 360. The number of radians of arc in a circle is $2\pi$.
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