[Calc] \(y = x^3 + 6 x^2 + 7 x - 2 \cos x\) changes concavity at \(x =\)
A
\(-1.58\)
✕
B
\(-1.63\)
✕
C
\(-1.67\)
✕
D
\(-1.89\)
✕
E
\(-2.33\)
✕
Question 24 of 34
| MCQ
· Level 3
[Calc] \(\operatorname*{lim}\limits_{h\rightarrow 0}(f(2+h)-f(2))/h = 5\). Which must be true? I. \(f\) continuous at 2 II. \(f\) differentiable at 2 III. \(f'\) continuous at 2
A
I only
✕
B
II only
✕
C
I and II only
✕
D
I and III only
✕
E
II and III only
✕
Question 25 of 34
| MCQ
· Level 3
[Calc] \(f(x) = 2 e^{4 x^2}\). \(f'(x) = 3\) at?
A
\(0.168\)
✕
B
\(0.276\)
✕
C
\(0.318\)
✕
D
\(0.342\)
✕
E
\(0.551\)
✕
Question 26 of 34
| MCQ
· Level 3
[Calc] Train moving 60 m/s east. Observer 70 m south. After 4 sec, train moves at how many m/s away?
A
\(57.60\)
✕
B
\(57.88\)
✕
C
\(59.20\)
✕
D
\(60.00\)
✕
E
\(67.40\)
✕
Question 27 of 34
| MCQ
· Level 2
[Calc] \(y = 2 x - 8\), min of \(xy\)
A
\(-16\)
✕
B
\(-8\)
✕
C
\(-4\)
✕
D
\(0\)
✕
E
\(2\)
✕
Question 28 of 34
| MCQ
· Level 3
[Calc] Area in Q1 enclosed by \(y = \cos x\), \(y = x\), y-axis
A
\(0.127\)
✕
B
\(0.385\)
✕
C
\(0.400\)
✕
D
\(0.600\)
✕
E
\(0.947\)
✕
Question 29 of 34
| MCQ
· Level 3
[Calc] Base of solid: \(y = \sqrt{\ln x}\), \(x = e\), x-axis. Square cross-sections perp to x-axis. Volume?
A
\(\dfrac{1}{2}\)
✕
B
\(\dfrac{2}{3}\)
✕
C
\(1\)
✕
D
\(2\)
✕
E
\(\left(\dfrac{1}{3}\right)(e^3 - 1)\)
✕
Question 30 of 34
| MCQ
· Level 3
[Calc] \(f'(x) = e^x - 3 x^2\). \(f\) has rel max at?
A
\(-0.46\)
✕
B
\(0.20\)
✕
C
\(0.91\)
✕
D
\(0.95\)
✕
E
\(3.73\)
✕
Question 31 of 34
| MCQ
· Level 3
[Calc] \(f(x) = \sqrt{x}\). Rate at \(c\) twice rate at \(x=1\). \(c=\)
[Calc] \(f(0)=3, f(0.5)=3, f(1)=5, f(1.5)=8, f(2)=13\). Trapezoidal with 4 subintervals on \([0,2]\)
A
\(8\)
✕
B
\(12\)
✕
C
\(16\)
✕
D
\(24\)
✕
E
\(32\)
✕
Question 34 of 34
| MCQ
· Level 2
[Calc] Antiderivatives of \(\sin x \cos x\). I. \(\sin^2 \dfrac{x}{2}\) II. \(\cos^2 \dfrac{x}{2}\) III. \(-\cos(2x)/4\)
A
I only
✕
B
II only
✕
C
III only
✕
D
I and III only
✕
E
II and III only
✕
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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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