Math 109 S07 Applied Algebra


4-23-2007 HOMEWORK for Friday: Section 5.3 #s 5, 10, 14, 26, 48.  Today we covering the use of exponentially based functions for modeling in business.  We covered very briefly the Gompertz equation, and two logistic equations.  We discussed at some length the solution of equations with exponential unknowns such as S=Pert
Wednesday will be QUESTION DAY and the In-Class portion of the test will be on Friday.  Monday has been designated JOKE DAY -- bring your very best joke for extra credit and eat doughnuts.  We also filled out the evaluation forms and unfortunately a number of students were absent. 

4-20-2007 Today we have a QUIZ on 5.1 and 5.2 and I'm handing out an Extra Credit Assignment called Financial Planning which you can also download HERE.  The Extra Credit is due by Wednesday next week and there will also be a test next week -- the LAST ONE! unless you sign up to take the Optional FINAL.

4-12-2007 Above is a graph of the Consumer Price Index data of example 7 on page 366 of the text.  Three different fitting curves have been applied and are color coded for clarity.  Blue is an exponential decay which is a natural choice.  Red is a inverse power law curve and Green is a logarithmic curve.  Each fits the data slightly differently.  We could interpret the blue curve as indicating the present value of $3.818 in 1960 dollars losing on average 5.06% of its value each year.  HOMEWORK FOR NEXT WEEK Ch 5.1 #s 3, 14, 21, 30, 41, 45 (use Excel), 48 (use Excel), 5.2 #s 2, 9, 18, 25, 35, 38, 46, 65.

4-11-2007 Today we went over a few things about curve fitting and I handed out an assignment which you can find HERE  We also went over the drill for the last couple of weeks of class.  We will have a test next week on Ch 1 and Ch 2 which will be a KICKOUT/MAKEUP which means that it will only count if it improves your grade.  It will kickout any previous test that was weaker and it won't count if it isn't a stronger result than previous.  Then on April 27th we will be having the last test which will be cumulative.  On Monday, April 30th we'll have DOUGHNUT DAY and I'll hand out the final grades and we'll fill out the course evaluation sheets.  If you don't like your final grade you have one last chance by taking the OPTIONAL FINAL!  Taking the Optional Final cannot hurt you but if you pass the final you will pass the class and the Optional Final will kick out any worse cluster.  If you beat your final grade on the Optional Final I will give you that grade for the course.  It won't be a cream puff exam, but it won't be any harder than the others you have taken.  The only kicker is that there will be no Take Home portion.  The April 27th exam will be representative of the optional final.  Remember that all your grades will be Cluster Graded with the Clusters being: Midterm, Quizzes, Tests to form 80% of your grade and the other 20% will be your homework grade.  See you on Friday.

4-2-2007 Homework for Parts 2.3 and 2.4: 2.3 # 1, 6, 11, 14, 15, 20, 31, 34; and 2.4 #s 2, 5, 17, 22, 41, 46, 49, 52.  The homework will be due the Wednesday after Easter Break.  On Wednesday we'll be covering section 2.4. 

3-30-2007 TEST Part 2 (actually Part 1 because of SNAFU) some folks overflowed into Physics Lab and ran until 13:28, but all were turned in finally.  Will try to have grades by next Wednesday anyway.

3-26-2007 Today we will be going over 2.1 and 2.2 on the Quadratic Equation.  We will be having a two part test, a 12 question take home and an analogous 12 question in class test on Friday.  Today we derived the general solution to the quadratic equation and demonstrated two of its applications: a) solving the general quadratic, b) and finding the x-coordinate of the vertex of the parabola. (Note: Accidentally gave out Part 2 as Part 1 -- no problem except the caveat under the name line is reversed -- Part 2 (now part 1) is open friends, and Part 1 which says it is is not. -- you got that right?)

3-23-2007 Want to get a head start on Homework for Next Week? We're going to be doing 2.1 and 2.2 so the Homework is 2.1 #'s 2, 5, 10, 17, 22, 35, 45, 58, and 2.2 #'s 2, 7, 14, 15, 31, 32, 44, 45 -- TODAY we have a QUIZ on 1.5 and 1.6.  Don't forget there will be a TEST next week (a take home part distributed Wednesday and an in-class part on Friday).

3-21-2007 Today we're going to complete 1.6 and there will be a QUIZ on Friday.  Next week we will have a TEST on Chapter 1 and we will be beginning Chapter 2.

3-19-2007 Today we covered 1.5 at least Elimination and the Homework is Ch 1.5 #s 5, 10, 13, 18, 27, 30, 35, and 36, and Ch 1.6 #s 3, 6, 17, 20, 29, 30, 38, 49, 56.  The Homework is Due on Friday and there will be a quiz, as usual on 1.5 and 1.6.

3-12-2007  Today we covered most of 1.3 and HOMEWORK for Friday was assigned as: Ch 1.3 #s 2, 7, 14, 17, 30, 37, 44, 47. and Ch 1.4 By Hand (graphing on graph paper or carefully hand done axes do #s 35, 36, 37, and 38.  Note all work must be shown on all problems.  Be neat and careful.  It pays off!

3-1-2007 The REBATE correcting is completed (although three folks didn't avail themselves of the opportunity.  I suppose you can't give dollar bills away to some people.  Obviously the rebate helped those with very low scores more than those with high scores.  However if the class grade were to depend only on the Test we've gone from many flunking to only a few flunking.  Now we have 1 A, 6 B's, 9 C's, 8 D's, and 12 F's.  That's better than 24 F's but still not very satisfactory.  Like the Marine Corps I'd like to take the idea of "No one left behind" seriously.  If you know someone that isn't doing very well you should volunteer to study with them and help them improve.

2-28-2007 REBATE processing is moving ahead.  I'll try to have your adjusted test grades by Friday.  Don't forget there will be a QUIZ on 1.1 and 1.2 on Friday.

2-26-2007 HOMEWORK ASSIGNMENT: Ch 1.1 #s 2, 4, 8, 16, 20, 26, 30, 42 and Ch 1.2 #2 2, 6, 8, 18, 26, 28, 40, 50.  Today the Test REBATE assignment is due and homework from 0.7 is due.  In class we covered 1.1 and touched the beginning of 1.2.  We'll cover 1.2 on Wednesday and do examples.  Don't forget there is a QUIZ on Friday on 1.1 and 1.2.

2-21-2007 Handed back Tests and went over them.  Then we covered Chapter 0.7.  Don't forget to do the homework: HOMEWORK ASSIGNMENT: Chapter 0.7 (2,8,12,22,40,48,52,58) on pages 48-49. DUE ON MONDAY February 26th.  There will be a QUIZ on 0.7 on Friday -- Open Friends.

Katelyn Mancini suggested that turning in a corrected test should count for something and an email was generated offering the following Deal You Can't Refuse: (MATH 109 01) A Deal Too Good To Believe
OK folks -- you can thank Katelyn for this.
If you do the following:
1) Turn in carefully done work correcting all the problems that you missed I will give you half credit for each problem on BOTH the take home and the inclass tests.
2) To avail yourselves of this REBATE you must turn in both tests and the work carefully and clearly marked and all stapled together with your name clearly written on the first page.
3) The work must be turned in at or before MONDAY's CLASS

Thank Katelyn -- her powers of persuasion are awesome!  Persistence pays off!

Cheers, Ray

2-20-2007 Test results for test one were disappointing.  The test consisted of two components.  One was take-home with Open Book, Open Notes, Open Friends and so you should have scored 100% instead the average was 62%.  The inclass portion was an individual test but also Open Book and Open Notes and the average was 51.4%.  The weighting was 20% on Take Home and 80% on Individual Test.  There was 1 A, 1 B, 6 C's and 3 D's 2 absent and everyone else flunked.  This sends me the clear message that you are not working hard enough on the material.

HOMEWORK ASSIGNMENT: Chapter 0.7 (2,8,12,22,40,48,52,58) on pages 48-49. DUE ON MONDAY February 26th.

2-16-2007 Today we went over Chapter 0.6 and did some of the problems from the homework.  I handed out the Takehome portion of the TEST.  The grading scheme is that you get 20% of your score from the Take Home and 80% from the In-Class test.  The Takehome is structured similarly to the In-Class test.  You cannot get help during the Inclass test however.  So pay careful attention and take notes as you do the Takehome.  Get help from smart friends.  But you should do the work yourself or it won't help you when it comes to the Inclass test.

2-9-2007 Quick Review on the board and then the QUIZ -- Candy Catastrophe! Next weeks homework is on Sections 0.5 and 0.6  Home work #3: 0.5 (34-36) #s 4, 6, 10, 14, 18, 32, 46, 62, 72 and 0.6 (41-42) #s 4, 6, 10, 14, 20, 24, 54, 62.  Homework will be due on Wednesday and there will be a TEST on Friday (you will be on your own, but it will be open book and open notes)

2-7-2007 Homework due today in class QUESTION DAY!  OK OK -- homework will be picked up on Friday and there will be a Quiz on Chapters 0.3 and 0.4.  Math Help sessions are on Mondays and Wednesdays from 6 to 8 p.m. in McK-247.  So if you need help with this stuff, check it out!

2-2-2007 Today we had a QUIZ and turned back the first homework.  The average was a disappointing 17 out of a possible 27 for a 62.9% average -- a D.  I might also say that a lot of the homework was very sloppy.  For those who actually read this Blog and want to get a head start on the Homework for next week you might want to check out: Section 0.3 (18-20)#s 4, 8, 14, 24, 38,50, 62, 64 and Section 0.4 (25-27) 2a, 2b, 4a, 4b, 10, 12, 18, 28, 36, 44, 58, 68, 70, 74.  This Homework will be due next Wednesday after class.

1-29-07 Today we covered 0.1 and the first part of 0.2 up to the Real Number line so that N, I, Rationals, Irrationals are all subsets of the Reals.  Homework assigned was: 0.1 (6-8) 4, 8, 20, 28, 36, 48, 52, 58; and 0.2 (13-15) 2, 4, 8, 18, 26, 32, 46, 50.  Mondays is Lecture Day, Wednesday is Question Day, and Friday is Quiz Day.  Lecture to some degree may be on any day, but Monday predominantly.