Index for MTH 142B Spring 2013
Math 142B Calculus II - Spring 2013

Jump to Chapter 5,   6,   7,   8,   9,   10,   11,    Test 123final

Course Materials:

Course Description, Lecture Plan (Week 1 Handout)

Office Hours: (B.H.) M/W 1:00-1:50
see me in Mathematics Rm 322 and we will relocate the 2nd floor lounge area

(TA) TBA

Math Help Center: Drop in tutoring in Mathematics Rm 107/110, starting Jan. 28.

Exam calculator/index card policy: On exams, each student may bring in a calculator. PROHIBITED are calculators with built-in computer algebra systems. In particular, the following calculators and their upgrades, are NOT permitted: TI-89, TI-92, TI Voyage 200, HP-48, HP-49, Casio FX2.0, Casio CFX 9970G. Also prohibited are laptop, netbook, tablet or handheld computers including PDAs, electronic writing pads or devices with pen-input, calculators built into cell phones or any other electronic communication devices.
On exams, each students may bring in one index card written both sides, with any information.

Preparedness:
Are you ready for Calculus II online quiz/review 3 quizzes, each 10 questions)
Are you ready for calculus 2- Marta Hidegkuti solutions page
Review materials from Publisher website

Outcomes: Students will be literate in the language and notation of integral calculus, sequences, series and power series. Students should strive for personal mastery of the skills described in http://www.mtsu.edu/math/forms/Learning_Outcomes_MATH_1920.pdf and will be well prepared for the sequels, Calculus III MTH 241 and Differential Equations MTH 306.

Preview of what you should be able to do on completing this course:
Are you ready for Calculus III online quiz/reviews (6 quizzes, each 10 questions)

History/Philosophy/Topics: wiki Calculus

Discussion: The ever so dreaded Calculus II (physicsforums)

MTH142 Motherhen Notes (A. Piech)


The webwork link for this course is
ww2.math.buffalo.edu/webwork2/2013_1_MTH142_Hassard
Your username is your usual UBIT username, and
your initial password is your UB person #, see the bottom left of your UB Card (something like 59265358)

When you see the page that lists the homework sets, there will be numbers 1, 2, 3, 4 .. in blue.
Click on the (blue) 1. This gives HW set 1, a new page listing problems 1, 2, .., 15 in blue. Click on (blue) Problem 1.

After filling in the answer boxes for a problem, you click on "Check Answers".

If a problem is at all difficult you should work on paper. Be sure to bring partial solutions with you when seeking help. However, you do not hand in the problem solutions on paper, rather you complete each question online and click on "Check Answers"

The webwork system can generate pdf files for entire HW assignments.

Webwork due dates:
Starting with HW 6 (relating to the lecture on Jan. 25) the full-credit HW due date will be 4 class periods after the lecture when the related material was covered. After the full-credit due date, there is a two-week period during which HW will be counted at reduced credit of 80%. Since the HW6 lecture was Fri. Feb. 25, the full credit due date is Mon. Feb. 4 and the reduced-credit due date is Mon. Feb. 18.


Lec. 1 1/14: Sec. 5.5 The Substitution Rule
HW: sets 1 and 2 of course webwork
(Integral) 2x(x2+4)100 dx (patrickJMT)
(Integral) (1+x^3)^9 3 x^2 dx by substitution (brightstorm)
(Integral 3 to 5) x sqrt(x^2-9) dx by substitution (brightstorm)
(Integral x from pi/2 to pi) -(cos(x))^2 sin(x) dx by substitution (khanacademy)
(Integral) 1/(3-2 x^2)^(1/2) dx by trig substitution (khanacademy)
(Integral) 1/(36 + x^2) dx by trig substitution (khanacademy)


Lec. 2 1/16: 6.1 Area Between Curves
HW: set 3 of course webwork
y=9-x2 and y=x+3 (wlmui)
(to following are all patrickJMT)
y=x2-4x and y=2x    y=8-x2 and y=x2, for x from -3 to 3
y=cos(x) and y=-sin(x), for x from 0 to pi/2
y=2-x2 and y=-x two curves, one left, one right
x=y2 and y=x-2 y=2/(1+x2) and y=|x|


Lec. 3 1/18: 6.2 Volumes
HW: set 4 of course webwork
volume of square-based pyramid (integrationbyawesome)
region bounded by y=x3 and y=x, rotated about x-axis (patrickJMT)


Quiz 1 on material from sections 5.5, 6.1, 6.2 in recitations on 1/23, 1/25, 1/28


Lec. 4 1/23 6.3 Volumes by Cylindrical Shells
HW: set 5 of course webwork
region bounded by y=-x2+x and y=0 rotated about y-axis (patrickJMT)


Lec. 5 1/25: 6.4 Work
HW: set 6 of course webwork
Determine amount of work required to:
pull 60 ft rope weighing 2 lb/ft hanging over edge, to top of building (also, work to pull half-way up) (patrickJMT)
pull 5 m rope weighing 1kg/m with attached object weighing 70kg, to point of suspension
Intro to springs and Hooke's Law (khanacademy)
stretch spring obeying Hooke's Law f(x)=kx from 35cm to 40cm (spring has natural length 30cm; to stretch spring from 30cm to 42 cm required 2 Newton-meters of work) (patrickJMT)
stretch spring obeying Hooke's Law f(x)=kx from natural length to 6in beyond natural length (spring requires 10lb force to hold stretched 4 in beyond natural length) (patrickJMT)
pump out a tank in the shape of a trough with triangular cross-section (patrickJMT)


Lec. 6 1/28: 6.5 Average Value of a Function
HW: set 7 of course webwork
Average value of a Function: derivation (rootmath)
Find the average value of:
f(x)=x2 over the interval [-1,1] (TheIntegralCALC)
f(x)=3x2 - 2 x over the interval [1,4] (rootmath)
g(x)=cos(x) over the interval [0,pi/2] (TheIntegralCALC)
f(x)=(cos(x))4 sin(x) over the interval [0,pi] (TheIntegralCALC)
f(x)=sqrt(4-x2) over the interval [-2,2] (DrChrisTisdell)
The Mean Value Theorem for Integrals (DrChrisTisdell)


Quiz 2 on material from sections 6.3, 6.4, 6.5 in recitations on 1/30, 2/1, 2/4


Lec. 7 1/30: 7.1 Integration by Parts
HW: set 8 of course webwork

Rule of thumb in choosing u of (Integral) u dv
(Integral 1 to 2) ln(x)/x^2 dx (patrickJMT)
(Integral) x sin(2x) dx (ExamSolutions)

The following use Integration by Parts twice:
(Integral) x2 ex dx (khanacademy)
(Integral) (ln(x))2 dx (patrickJMT)
(Integral) e2x sin(x) dx "Loopy Example" (patrickJMT)


Lec. 8 2/1: 7.2 Trigonometric Integrals
HW: set 9 of course webwork on sections 7.2-7.3 will be due after test

The following are all patrickJMT videos:
(Integral) (sin(x))3 (cos(x))2 dx    (Integral) (sin(x))3 (cos(x))3 dx    (Integral) (sin(x))2 (cos(x))2 dx
(Integral) (tan(x))2 (sec(x))4 dx    (Integral) (sec(x))4 dx    (Integral) (tan(x))5(sec(x))3 dx    (Integral) (tan(x))5 dx
(Integral) sin(2x) cos(3x) dx    (Integral) sin(2x) sin(2x) dx
(Integral) (cos(x))2 (tan(x))3 dx    (Integral) csc(x) dx    (Integral) (cos(x)+sin(x))/(sin(2x)) dx


Lec. 9 2/4: 7.3 Trigonometric Substitution
HW: set 10 of course webwork
(Integral) 1/(36 + x2) dx    (khanacademy)
(Integral 0 to 1) 1/(1+x2) dx
(Integral) x3/sqrt(x2+9) dx (patrickJMT)
(Integral) x3/sqrt(16-x2) dx by trig subs. (patrickJMT)
(Integral) 1/sqrt(9 x2 + 4) dx
(Integral) sqrt(6x-x2-5) dx    (khanacademy)
(Integral) 1/(5-4x-x2)5/2) dx    (continued)


Quiz 3 on material from sections 7.1, 7.2 in recitations on 2/6, 2/8, 2/11


Lec. 10 2/6 - a review before the test

Test 1 on Fri. Feb. 8 covers sections 5.5, 6.1-6.5 and 7.1
and will be similar to questions 1,4,5,6,7,8,9 of midterm 1 Fall 2006 of
www.math.rochester.edu/courses/162/home/old%20exams.html UR MTH 162 Past Exams
See also questions 1,2,4 and 5 from B.H. Test 1 from 142 Spring 2000


Lec. 11 2/8 - this period used for test 1
Test 1 with answers


Lec. 12 2/11: 7.4 Integration of Rational Functions by Partial Fractions
HW: set 11 of course webwork

long division x4+0x3-1x2+1x-4 divided by x2-2x+5 Note HW 12 problem 4 requires long division before partial fraction decomposition


Quiz 4 on material from sections 7.3, 7.4 in recitations on 2/13, 2/15, 2/18


Lec. 13 2/13: 7.5 Strategy for Integration
HW: set 12 of course webwork


Lec. 14 2/15: 7.6 Integration Using Tables and CASs
HW: set 13 of course webwork


Lec. 15 02/18: 7.7 Approximate Integration
HW: set 14 of course webwork


Quiz 5 on material from sections 7.5, 7.6, 7.7 in recitations on 2/20, 2/22, 2/25


Lec. 16 2/20: 7.8 Improper Integrals
HW: set 15 of course webwork
(integral -1 to 0)x-2 dx (patrickJMT)


Lec. 17 2/22: 8.1 Arc Length
HW: set 16 of course webwork
Find the arclength of the curve: y = (2/3)(x2+1)3/2 for x from 0 to 2 (TheIntegralCALC)
y = x3/2 for x from 0 to 4 (MIT, Lewis; incorrectly titled x2/3)
y = (1/3)(x2+2)3/2 for x from 0 to 1 (patrickJMT)
y = (1/2)x2 - (1/4) ln(x) for x from 2 to 4 (patrickJMT)


Lec. 18 2/25: 8.2 Area of a Surface of Revolution
HW: set 17 of course webwork
area of surface of revolution, curve y = x3 for x from 1 to 2, revolving around x-axis (fordummies)
area of surface of revolution, curve y = x2 (TheIntegralCalc)
area of surface of revolution, curve y = (4 - x2)1/2 for x from -1 to 1, revolving around x-axis (TheIntegralCalc)
area of surface of revolution, curve y = x1/2 for x from 4 to 9, revolving around x-axis,    same example but with x=g(y)=y2 for y from 2 to 3, and ds in terms of dy (patrickJMT)


Quiz 6 on material from sections 7.8, 8.1, 8.2 in recitations on 2/27, 3/1, 3/4


Lec. 19 2/27: 8.3 Applications to Physics and Engineering
HW: set 18 of course webwork
hydrostatic force on triangular plate 4m high, 5m wide at top, submerged so top is at depth of 3m in water (partickJMT)
The effect of hydrostatic pressure on a styrofoam cup
center of mass of region bounded by f=4-x2 and g=x+2, -3 ≤ x &le 1 (youtube.com)


Lec. 20 3/1 - a review before test 2
The test covers covers 7.2-8.2 and will be similar to
questions 2, 3, 10 and 11 of
UR Midterm 1 from Fall 2006 together with
questions 14 of UR Final exam from Fall 2006
See 142s13t2_samplesolutions from class
See also solutions at www.math.rochester.edu/courses/162/home/old%20exams.html UR MTH 162 Past Exams


Lec. 21 3/4: This period used for test 2
Test 2 with answers


Quiz 7 on material from section 8.3 in recitations on 3/6, 3/8, 3/18


Lec. 22 3/6: 8.4 Applications to Economics and Biology
HW: set 19 course webwork


Lec. 23 3/8: 8.5 Probability
HW: set 20 of course webwork
find probability that your call is answered in first two minutes if probability density function for waiting time is f(t)=0 if t<0, f(t)=(1/6)e-t/6 if t ≥ 0
probability that the amount of rain tomorrow is between 1.9 and 2.1 inches is the area under the graph of the probability density function for Y from 1.9 to 2.1 (khanacademy)


Spring Recess March 11-16


Lec. 24 3/18: 9.4 Models for Population Growth,
HW: set 21 of course webwork
Lake now has 500 fish, carrying capacity is 10000, population triples in first year. Find population after t years (PatrickJMT)


Quiz 8 on material from sections 8.4, 8.5, 9.4 in recitations on 3/20, 3/22, 3/25


Lec. 25 3/20: 10.1 Curves Defined by Parametric Equations
HW: set 22 of course webwork
Parametric curves, graphing x(t)=1+t1/2, y(t) = t2-4t, 0 ≤ t ≤ 5 (PatrickJMT)
Car going 5m/s drives off 50m cliff: graphing x(t)=5t+10, y(t)=50-5t (Khan academy)


Lec. 26 3/22: 10.2 Calculus with Parametric Curves
HW: set 23 of course webwork
equation of tangent line to curve x = 3 t2 - t;   y = t1/2 at t = 4 (patrickJMT)
arclength of curve x = 1 + 3 t2,   y = 4 + 2 t3   for t from 0 to 1 (patrickJMT)
arclength of curve x = et + e-t;   y = 5 - 2 t   for t from 0 to 3 (patrickJMT)

area enclosed by y=2.5 and curve x = t - 1/t;   y = t + 1/t (patrickJMT)


Lec. 27 3/25: 11.1 Sequences
HW: set 24 of course webwork
Sequences:
1,2,3,...
0.1, 0.01, 0.001 ...
an=3(-1)n/n!
an=n(n-1)
an=2n/(3n+1)
(teacherspayteachers.com)


Quiz 9 on material from sections 10.1, 10.2, 11.1 in recitations on 3/27, 3/29, 4/1


Lec. 28 3/27: 11.2 Series
HW: set 25 of course webwork

(sum k=1 to 5) 2(-3)k-1 (bullcleo1)
Infinite sums of geometric series: 0.21212121... as a geometric series, summed to a fraction (TheIntegralCALC)
(sum k=0 to ∞) (2/3)k, summed to a fraction (TheIntegralCALC)
1 + e-1 + e-2 + e-3 + ..., summed (TheIntegralCALC)


Lec. 29 3/29: 11.3 The Integral Test and Estimates of Sums
HW: set 26 of course webwork
Show (sum n=1 to ∞) n/(n2+1) C or D (PatrickJMT)
Show (sum n=1 to ∞) 1/(n2-4n+5) C or D (PatrickJMT)
Show (sum n=0 to ∞) n e-n2 C or D (PatrickJMT)


Lec. 30 4/1 - a review before test 3. The test covers covers 8.3-8.5, 9.4, 10.1-10.2, 11.1-11.2. There will be 5 questions;
Q1 a centroid/center of mass problem similar to section 8.3 examples 4 and 5
Q2 a probability density problem like section 8.5 example 1, (perhaps using a solution of the logistic equation section 9.4 as the probability density f)
Q3 a parametric curve problem, like section 10.2 examples 2 and 5, or UR Fall 2007 Final question 11/UR Fall 2006 Final question 15
Q4 a limit of sequence problem like section 11.1 examples 7 and 13 or UR Fall 2006 Midterm 2 question 9
Q5 a gemetric series problem like section 11.2 examples 4 and 5 or UR Fall 2009 Midterm 2 question 5
www.math.rochester.edu/courses/162/home/old%20exams.html UR MTH 162 Past Exams

142s13t3_sample_discuss_20130401.pdf


Quiz 10 on material from sections 11.2, 11.3 in recitations on 4/3, 4/5, 4/8


Lec. 31 4/3: This period used for test 3
Test 3 with answers


Lec. 32 4/5: 11.4 Comparison Tests
HW: set 27 of course webwork
(sum n=1 to ∞)1/(n2+3) C or D?
(sum n=3 to ∞)1/sqrt(n-2) C or D?
(sum n=1 to ∞)1/n! C or D?
(bullcleo1)


Lec. 33 4/8: 11.5 Alternating Series
HW: set 28 of course webwork
(sum n=1 to ∞) (-1)n+1/n C or D?
(sum n=1 to ∞) (-1)n2n/(5n-3) C or D?
(sum n=1 to ∞) (-1)n/(3 ln n) C or D?
(bullcleo1)


Quiz 11 on material from sections 11.4, 11.5 in recitations on 4/10, 4/12, 4/15


Lec. 34 4/10: 11.6 Absolute Convergence and the Ratio Test
HW: set 29 of course webwork
(sum n=1 to ∞)(-1)n+1/(n+2) C or D? If C, conditionally or absolutely?
(sum n=1 to ∞)(-1)n+1/n(4/3) C or D? If C, conditionally or absolutely?
(sum n=1 to ∞)(-1)n/5n/(9n-2)C or D? If C, conditionally or absolutely?
(bullcleo1)


Lec. 35 4/12: 11.7 Strategy for Testing Series
HW: set 30 of course webwork
14 series practice problems worked (PatrickJMT)


Lec. 36 4/15: 11.8 Power Series
HW: set 31 of course webwork
Radius of Convergence for
(sum n=0 to ∞)xn, (sum n=0 to ∞)(x/2)n,
(sum n=0 to ∞)xn/n!, (sum n=0 to ∞)xn/(n 2n),
(sum n=0 to ∞)x2n/(2n)!
(MIT, Breiner)


Quiz 12 on material from sections 11.6, 11.7, 11.8 in recitations on 4/17, 4/19, 4/22


Lec. 37 4/17: 11.9 Representation of Functions as Power Series
HW: set 32 of course webwork
What functions do each of the following represent?
a) (sum n=0 to ∞) xn+2/n!,
b) (sum n=2 to ∞) xn,
c) (sum n=0 to ∞) (xn/n! + xn),
d) (sum n=1 to ∞) xn+1
(MIT, Breiner)
Series for functions
1/(1-x), 1/(1+x), 1/(1-x3),
1/(1+9x2), x/(4x+1), x/(9+x2)
all based on 1/(1-x) = 1 + x + x2 + x3 + ...
(PatrickJMT)


Lec. 38 4/19: 11.10 Taylor and McLaurin Series
HW: set 33 of course webwork
first few terms of Taylor series for sec(x) (MIT, Lewis)
cosh(x)    2 sin(x) cos(x)    x ln(1-x3) (MIT, Lewis)


Lec. 39 4/22: 11.11 Applications of Taylor Polynomials
HW: set 34 of course webwork
Approximate (integral 0 to 1) x cos(x3 dx to within 3 decimal places (PatrickJMT)


Quiz 13 on material from sections 11.9, 11.10, 11.11 in recitations on 4/24, 4/26, 4/29


Lec. 40 4/24: 10.3 Polar Coordinates
HW: set 35 of course webwork
write polar form of rectangular equations x2 + y2 = 1,    y = 2x + 1,    y = 3/x (patrickJMT)
graph r = 7 sin(theta),    r = 6 + 4 sin(theta) (TheIntegralCALC)
r = 2,    r = tan(theta) sec(theta),    theta = -pi/6,    r2 - 3 r + 2 = 0 (patrickJMT)
graphing a polar curve: r = 3 cos(2 theta),     continued (patrickJMT)


Lec. 41 4/26 10.4 Areas and Lengths in Polar Coordinates
HW: set 36 of course webwork
find area enclosed by one loop of r = sin(4 theta) (partickJMT)
find area of rightmost region bounded by r = 2 and r = 4 cos(theta) (bullcleo1)
find area of middle region bounded by r = 2 and r = 4 sin(theta) (bullcleo1)
find area of inner loop bounded by r = 1 + 1 cos(theta) (bullcleo1)
arclength of curve r = (sin(theta/2))2 for theta from 0 to pi (TheIntegralCalc)
arclength of curve r = 1 - sin(theta) for theta from 0 to 2 pi (bullcleao1)


142s13t4_samplefinal.pdf Sample Final

142s13t4_samplefinal_partAsolutions.pdf Sample Final solutions to Part A

Lec. 42 4/29 Last day of class- Review for the Final

The final will have parts A and B. Part A is on material from 11.3-11.11, 10.3-10.4 and part B is on the course as a whole.


Final Exam: 5/6/2013, Monday 8:00AM - 11:00AM Room NSC 205