Log of Updates
The table below contains a log of updates that have been made over the past several months. The date indicates the most recent change to the document. Free items are available for re-download. Purchased items can be re-obtained by contacting us at team@MasterMathMentor.com. Whenever you download a solution, you are sure that you have the most updated version.
The AB Calculus Student Manual and its companion AB Calculus Solution Manual have had numerous changes and I strongly recommend that if you haven't downloaded the current version (completed on January 1, 2011), you should do so. The big change is the replacement of an annoying font that makes it hard to distinguish between f, f ' and f ". Also all answers in the solution version have been boxed making them much easier to read.
Also, as of January 23, 2011, the BC Calculus Student Manual and its companion BC Calculus Solution Manual have also had aesthetic changes. While there is little change in the student manual (other than that annoying font), the solution manual has all answers boxed, making it much easier to read. However, in BC42 Taylor Polynomials, I do a better job in explaining the dreaded Lagrange remainder error. I would recommend that you download that new section from the website. The remainder of the pages are unchanged except for their numbering. The solution version of course has the Lagrange material and if you had purchased solutions, and you haven't gotten the updates, contact me. I strongly suggest that you download it so you will have the "latest and greatest."
| ITEM | UPDATED | LINK | COMMENTS |
| AP Stat Inference | 2/16/12 | If purchased, contact us for link for solution. |
The Inf03ZestsConfIntervalAns file. The Type I and Type II error assignment at the end never had solutions. They are now included. Not included are opinions on which error is worse. Opinions will vary and indeed, are a great discussio point. |
| AB Student and Solution Manual | 2/12/12 | Section 32 | Error in the formula for 2nd FTC on p. 164. Thanks to Ginger Riddle for picking this up. |
| Demystifying the AB Exam Multiple Choice | 2/8/12 | If purchased, contact us for link for solution. | Problem # 131 - typo in the solution's integrand. The answer is still correct. This affected exam 1 solutions - # 30 as well. |
| AP Stat Descriptive | 2/2/12 | Section 9 | Page 6, # 5. The standard deviations make no sense. American League should be .0202 and National League should be .0214. Won't affect the final answers. Thanks to Dan Meade for spotting this. |
| Demystifying AB free response Student & Solutions | 1/30/12 | Section I | Example 77, parts a and b. Inverse functions have always confused students and it is really easy to make an error. The College Board loves problems like this - taking the derivative of the inverse to a function at a point. I fell into the trap, mostly because of carelessness. Paul Street pointed out the embarrassing error and it has been corrected. Part b of the question now asks for the derivative of the inverse at x = -1, which was a typo. So download the student version and if you purchased the solutions, email me and I will send you the link to the corrected version. |
| AP Statistics - Inference 01 and Inference 02 | 1/25/12 | If purchased, contact us for link for solution. | Some typos in the answers and wording of questions. |
| AP Statistics Solutions - Descriptive Stats # 09 | 1/25/12 | If purchased, contact us for link for solution. | Several slight mistakes - page 20, ex) 5b, page 18, ex 2) changed the standard deviation, and page 25, ex 10 - changed the wording. |
| AP Calculus AB Manual Solutions | 1/17/12 | If purchased, contact us for link for solution. | Page 126 - Sample problem. The (x2 + 1) should have an exponent of 6. |
| AP Calculus AB Manual Solutions | 1/17/12 | If purchased, contact us for link for solution. | Page 212 - # 8. The exponent for the e should be negative. Thanks to Ely Stern for spotting this. |
| Statistics Probability Answers | 1/9/12 | If purchased, contact us for link for solution. | Probability 03 - Tree Diagrams. Problem 3 had the probability of getting an answer correct as 90% but I inexplicably used 85%. Thanks to Lisa Tackett for spotting this. |
| AB Solution Exams | 1/9/12 | If purchased, contact us for link for solution. | Exam 23a - Practice midterm. Eventually I'll get this exam totally correct. Problem 29 was wrong, wrong, wrong. Answer D. Thanks to Cherie Burkett for finding this one. |
| AB Solution Exams | 1/1/12 | If purchased, contact us for link for solution. | # 17. Mistake in Mean-Value Theorem changes answer to C. Thanks to Susan Fitzgerald for spotting this. |
| AB Student and Solution Exams | 1/1/12 | Exam 23a | # 25. Forgot the square in the gravity formula. Thanks to Susan Fitzgerald for finding this. |
| Demystifying the AB Exam Multiple Choice | 12/29/11 | If purchased, contact us for link for solution. The student versions are available on the website. |
Meg Clemens found some mistakes, some minor, some major and a couple necessitating the problems be changed. If you purchased the solutions, you have been notified and sent links to the material. Here are the corrected section whether it affected the student or solution version or both, problem #, test location and test problem #.
Section G, # 41, Student/Solution, Test 2, Problem # 2. Section I, # 49, Student/Solution, Test 2, Problem # 17. Section K, # 63, Student/Solution, Test 3, Problem # 28. Section Q, # 97, Student/Solution, Test 2, Problem # 43. Section R, # 99, Student/Solution, Test 2, Problem # 20. Section R, # 103, Student/Solution, Test 2, Problem # 8. Section V, # 128, Solution, Test 3, Problem # 43. Section V, # 130, Student/Solution, Test 2, Problem # 24. |
| Demystifying the BC Exam Multiple Choice | 12/29/11 | If purchased, contact us for link for solution. The student versions are available on the website. |
The above errors affected some problems in the BC exams. Here they are:
Test # 2 (Student & Solutions), Problems 2, 17, 24, 28 Test # 3(Solutions) , Problem 43 Test # 4 (Student & Solutions), Problem # 44 |
| AB Exam Solutions | 12/20/11 | Exam 23a | Problem 28. Problem choices needed to be changed as well as the answer. Thanks to Tess Rivero for finding this awful error! |
| AB Exam Solutions | 12/14/11 | If purchased, contact us for link for solution. | Exam 19 - Absolute Max/Min. In # 1, -2 was not in the given interval. In # 3, only maximum slope was asked for. Thanks for Ginger Riddle for spotting these. |
| Statistics Manual - Inference | 12/6/11 | If purchased, contact us for link for solution. | #11 - Proportion Tests Solutions has some small errors in the homework solutions - notably pages 13 and 15. Doesn't affect the conclusions. |
| Demystifying the BC Free Response Exam | 12/5/11 | BC Section K | Section K has some references to previous problems that are incorrect. While not affecting answers, you may want to re-download the student version. |
| Demystifying the BC Multiple Choice Exam | 12/4/11 | If purchased, contact us for link for solution. | Problem # 55. Several errors, one affecting the answer. The solution has changed from D to E: -1/25. Customers who purchased solutions will find this problem in exam 2, # 28. You can get links to the solutions by emailing me at sschwartz8128@verizon.net. Thanks to Robin Nesky for finding this one. |
| Demystifying the AB Multiple Choice Exam | 12/2/11 | If purchased, contact us for link for solution. | Problem # 56. Angle changes at 5π/180 which makes the answer incorrect. The correct answer is A. Customers who purchased solutions will find this problem in exam 2, # 32. You can get links to the solutions by emailing me at sschwartz8128@verizon.net. |
| Demystifying the AB Multiple Choice Exam | 11/30/11 | Section D | Section D - # 19. Problem should ask for the slope of the tangent line at x = 1, not x = 2. Answer is correct. Customers who purchased solutions will find this problem in exam 1, # 9. You can get links to the current version of this exam as well as the solution by emailing me at sschwartz8128@verizon.net. |
| Demystifying the AB Multiple Choice Exam | 11/30/11 | Section J | Section J - # 51. Incorrectly wrote volume of sphere (using a square instead of a cube). But the solution uses the correct formula. Customers who purchased solutions will find this problem in exam 3, # 27. |
| Demystifying the AB Multiple Choice Exam | 11/30/11 | Section E | Section E - # 27. The correct answer wasn't among those listed. I made a careless algebra mistake. But I have found that the AP exam is less concerned with complex algebra and I realized I didn't like the problem. So I created a new one using implict and trig which I think is better. Customers who purchased solutions will find this problem in exam 2, # 31. The only thing that is the same about the problem is the solution (D). |
| Demystifying the BC Multiple Choice Exam | 11/29/11 | Section K | Section K - #56. The interval should have been [0,1], not [0,π/2]. The answer stays the same. Customers who purchased solutions will find this problem in exam 3, # 24. You can get links to the current version of this exam as well as the solution by emailing me at sschwartz8128@verizon.net. Thanks to Robin Nesky for picking this up. |
| Demystifying the BC Multiple Choice Exam | 11/28/11 | Section J | Section J - # 52. The correct answer (-24) was not given. Answer A and B were changed with A still the correct answer. Customers who purchased solutions will find this problem in exam 3, # 10. You can get links to the current version of this exam as well as the solution by emailing me at sschwartz8128@verizon.net. Thanks to Robin Nesky for picking this up. |
| AB Solution Exams | 11/19/11 | If purchased, contact us for link for solution. | Exam # 08 - Chain Rule. Problem # 7 - missed a negative in the answer for f '(x) and the optional answers. Thanks to Greg Springer for finding this one. |
| AB Student Exams | 11/12/11 | 05 Quarterly Exam | Problem # 27. The notation made it unclear whether to take the derivative of f and then evaluate it at g(1) or to take the derivative of f and g at x = 1. The new notation indicates the latter. Thanks to Bill Norman of Norristown High for pointing this out. |
| AP Calculus AB Manual Student & Solutions | 11/9/11 | Section 14 | Page 84 # 5 - Rolle's Theorem. I changed the interval and the function is not differentiable at x = 2, not 0. Thanks to Ginger Riddle. |
| Demystifying AB free response Student & Solutions | 11/6/11 | Section I | Related Rates - # 26. Some changes to wording were made for clarity and part c's radius changed to 50 feet. Thanks to Ely Stern for pointing this one out. |
| AB Solution Exams | 10/31/11 | If purchased, contact us for link for solution. | Exam 14 - Motion Quiz - Created graphic solutions to position function for problems 1 and 2. |
| AP Statistics Probability04 Random Variables answers | 10/19/11 | If purchased, contact us for link for solution. | pages 9 and 10 - changes in answers for # 3, 4, and 6. Also, on page 13, changes to several answers, wording of questions and renumbering. Thanks to Helene (not sure of her last name) for pointing these out. |
| AP Calculus AB Manual Student and Solutions | 10/15/11 | If purchased, contact us for link for solution. | P. 185. Paul SooHoo pointed out that the square root of 2 is not trancendental. Took the word out not to be misleading. |
| AP Calculus AB Manual Solutions | 10/3/11 | Section 10 | Page 52 Problem # 4. Mistake in the equation - right side of equation should be 4, not 2. Doesn't affect the solution. Also # 5 was not written as an equation. Not + 2. Should be = 2. Doesn't affect the solution. |
| AB Exams Student and Solution | 9/22/11 | If purchased, contact us for link for solution. | Made Problem # 14 and 15 clear in what is asked. Denominator in #19 solution should be x - 3, not x + 3. Thanks to Bruce Hartman for pointing these our |
| AB Exams Student | 9/18/11 | 05 Basic Derivative Exam | Typo on problem # 18. Does not affect question or solution. |
| AB Exams Solutions | 9/18/11 | If purchased, contact us for link for solution. | Graphing Limit Quiz, problem # 5. The questions should deal with limits as x approaches 1, not -1. The answers were correct for x approaching 1 but the questions are now correct in the student and solution version. Also, errors in solutions to problem # 1a and 3d have been corrected. |
| Descriptive Statistics # 6 | 9/16/11 | If purchased, contact us for link for solution. | Made some corrections to the newly added problem. |
| AP Calculus AB Manual Solutions | 9/14/11 | If purchased, contact us for link for solution. | Page 19, 1a - Ridiculous math error. Answer is 5, not 4. |
| Demystifying AB free response Student & Solutions | 9/14/11 | Section C | Problem # 7 should state that function h is continuous and the table of values was slighly changed although that doesn't impact the solution. Thanks to Ely Stern for picking this up. |
| Descriptive Statistics # 6 | 9/6/11 | If purchased, contact us for link for solution. | Added another comparison assignment that was previously feft out. Compare the number of Fries given in different county's McDonalds. |
| Demystifying BC free response Student & Solutions | 9/4/11 | BC Section H |
Page 20, Example 30. Forgot to say t = 0. |
| Precalculus - Unit 5 Student and Solutions | 8/7/11 | If purchased, contact us for link for solution. | Page 1 - typos. |
| Precalculus - Unit 4 Student and Solutions | 8/4/11 | If purchased, contact us for link for solution. | Page 4 - critical point values were wrong. |
| AB Calculus Opening Pages - Student and Solutions | 8/2/11 | If purchased, contact us for link for solution. | Page 3 - TI-84 screenshot was wrong. |
| Demystifying BC free response Student & Solutions | 8/1/11 | BC Sample Tests | Page 43 - # A2. g(0) should equal -1. Part c - eliminate the word Maclaurin. Thanks to Ely Stern and teachers at NY College of Technology for spotting this one. |
| Precalculus Solution Manual Unit 3 | 8/1/11 | If purchased, contact us for link for solution. |
Page 10, # 3 Solution reworked without Law of sines. Page 12, #11 Solution, Page 13, # 13 Solution. |
| Precalculus Student and Solution Manual Unit 1 | 7/16/11 | If purchased, contact us for link for solution. | Some small typos in both unit and solutions. Nothing affecting solutions to problems. |
| AB Exams Solutions | 5/26/11 | If purchased, contact us for link for solution. | Exam 33 solutions have different problems (#1 and #4) than the student exam. The solutions are written correctly though. |
| AP Calculus AB Manual Student | 5/24/11 | Section 19 | Diagram for # 13 should say meters, not feet |
| AP Calculus AB Manual Student and Solutions | 5/24/11 | Section 02 | Slight typo middle of page 14. |
| Precalculus Student and Solutions | 5/13/11 | Unit 12 | Spelling error page 7, formula error in definition page 9. |
| Demystifying AB free response Student & Solutions | 5/4/11 | Section V | Page 53, Ex 81e. I changed the problem to show that the time that the rumor spreads the fastest is when t = 0. Thanks to Jp Fletcher for showing me the errors of my ways. Also some correction in wording in "How to find it" suggested by Bruce Hartman. |
| Demystifying AB free response Solutions | 5/2/11 | Sample Tests | Minor errors. Page 57, Ex. A1, part a: There was an extra "sin" in solution. Part c: Final answer is 886, not 888. Page 58, Ex A2, part c. There was a missing exponent of 2 in the 2nd integral. Thanks to students at Ramaz Upper School for spotting these. |
| Demystifying AB free response Student & Solutions | 4/30/11 | Section R | Page 41, #60, part d. It should have asked for left Riemann sums. The answer is based on that. Thanks to Jameson LeRossignol for finding this one. |
| Demystifying AB free response Solutions | 4/29/11 | If purchased, contact us for link for solution. | Sample tests. Page 66, Example D4, part d. Doesn't affect solutions but dx should be dt. Thanks to Mr. Ely Stern's students. |
| Demystifying BC free response Student & Solutions | 4/28/11 |
If purchased, contact us for link for solution. |
Page 37, #58. g(x) was improperly defined. It has been changed to an accumulation function. Also solution to part a) had a typo in it. Thanks to Brandon Grant, student at Wissahickon High, for picking up this subtle error. |
| Jeopardy Solutions | 4/27/11 | If purchased, contact us for link. | Final Jeopardy Solution changed. Thanks to Dan Thompson and his students for picking this one up. |
| Demystifying AB free response Solutions | 4/25/11 | If purchased, contact us for link. |
Page 9, #5b. Final answer corrected. Page 37, #52b. Inflection point at x = 2, not 3. Page 44, #63b. Final answer corrected. Page 52, #80c. Exponent changed. Answer correct. Thanks to Jackie Lewis for spotting these. |
| Demystifying AB free response Student and Solutions | 4/20/11 | Section O | Page 31, # 44a. Changed the integral from 0 to 120 to 0 to 160 and made it clearer how to construct the right Riemann sum. Thanks to Jameson LeRossignol for picking this up. |
| Demystifying BC free response Solutions | 4/12/11 | If purchased, contact us for link. | Page 43, Part b. The sin(x) should have a power of 3, not 4 in the final answer. Thanks to Mr. Ely Stern's students for finding this. |
| Demystifying AB free response Solutions | 4/12/11 | If purchased, contact us for link. | Page 69, Part c: A(0) - M(0) = 51, changing the final answer. Thanks to Mr. Ely Stern's students for picking this up. |
| AP Stat Inference Solutions | 4/11/11 | If purchased, contact us for link. | 12 Hypothesis Testing Take Home. Problem # 2 used wrong formula to calculate z. Value was correct and so was conclusion. |
| Demystifying AB free response Student and Solutions | 4/9/11 | Section N | A careless typo but important. In the description of Riemann sums and the Trapezoid rule, I summed the x-values instead of the f (x) values. Terrible. Prasanna Velamuri spotted this and I am grateful. |
| Demystifying AB free response Student and Solutions | 4/7/11 | Section T | Page 46, Problem 67. Took out the words "first quadrant" in the problem. R is the region between the two curves. Doesn't affect the solution. Thanks to Bruce Hartman. |
| AP Calculus AB Manual Student and Solutions | 4/3/11 | 42 Derivatives of Inverses Functions | Page 209. Slight change in Method 2 a) description. Thanks to Ginger Riddle. |
| AP Calculus AB Manual Student and Solutions | 4/3/11 | 41 Inverse Trig | Page 207 - problems 4 and 5 were the same. Changed # 5. Thanks to Ginger Riddle. |
| AP Calculus AB Manual Solutions | 4/3/2011 | If purchased, contact us for link. | Slight correction to p. 179, #10d - typo. Thanks to Corlyce Barth. |
| AB Exams Student and Solutions | 4/2/2011 | Exam 4a Limits | Changed Question # 3. Thanks to Holly Wamsley. |
| AB Exams Solutions | 4/2/11 | If purchased, contact us for link. | Prolem # 6 needs negative sign. Holly Wamsley. |
| AB Exams Solutions | 4/2/11 | If purchased, contact us for link. | Errors corrected in answers for #5 and #8. Holly Wamsley. |
| AB Exams Student and Solutions | 4/2/11 | Exam 8a 5 AP Problems | Problem 2 had misleading information in its description. Answer 3c corrected. Holly Wamsley. |
| Demystifying BC free response Student & Solutions | 4/1/11 | BC Section I | Page 22. Typo in "how to find it". y = r sin theta. The dangers of copy/paste. Jean St. Clair again! |
| Demystifying BC free response Student & Solutions | 4/1/11 | BC Section K | Page 29, # 45. Typo having nothing to do with the actual problem. |
| Demystifying BC free response Solutions | 4/1/11 | If purchased, contact us for link. | Page 33, # 52, parts a, c, d. Thanks to Jean St. Clair. |
| Demystifying BC free response Solutions | 4/1/11 | If purchased, contact us for link. | Page 33, # 38, part c. Again, thanks to Jean St. Clair. |
| AP Calculus AB Exams | 4/1/22 | 31 ln e Practice Test | #12, #15, #26 solutions. Thanks to Ginger Riddle. |
| Demystifying BC free response Student & Solutions | 3/24/11 | BC Section B | Added integration by partial fractions to section B and updated solutions. |
| AP Calculus AB Manual Solutions | 3/23/11 | If purchased, contact us for link. | Pages 156/157. Error on # 2. Typos in solutions to # 3, 10, 11, 13, 15. Answers not changed. Thanks to Bruce Hartman. |
| AP Calculus AB Manual Solutions | 3/23/11 | If purchased, contact us for link. | Page 179 - # 10. Made the solutions a little clearer. |
| AP Calculus AB Manual Student | 3/19/11 | 31 Motion Revisited | Page 162. Slightly changed wording of problem 5 sections h) and i). Thanks to Bruce Hartman for pointing out an inconsistency. |
| AP Calculus AB Manual Solutions | 3/19/11 | If purchased, contact us for link. | Page 162. Solutions added to problem 5, sections h) and i). |
| Demystifying BC free response Student | 3/18/11 | BC Sample Tests | Sample Test problem D-3 type. Part a) should be calculated for f (-3.5) and part b) interval is [-3.5, 3.5. Thanks to Susan Lohr for finding this. |
| Demystifying BC free response Solution | 3/18/11 | If purchased, contact us for link. | Sample Test problem D-3. No error in answer, just the same type that occured above. |
| AP Calculus AB Manual Student | 3/14/11 | 48 L'Hopital | Page 225 - Changed problem # 4 |
| AP Calculus AB Manual Solutions | 3/14/11 | If purchased, contact us for link. | Page 225 - Solutions for #2, #4 (Problem changed), 5. Page 226 - Solution for # 10. Thanks to Jen Parker. |
| AP Calculus AB Manual Solutions | 3/14/11 | If purchased, contact us for link. | Page 59 - #27 Answer. Typo on Solution # 28. Thanks to Christy Gailei. |
| AP Calculus BC Manual Student | 3/9/11 | BC # 39 | Changed the problem (point) for # 20. |
| AP Calculus BC Manual Solutions | 3/9/11 | If purchased, contact us for link. | Changed the problem (point) and solution for # 20. Thanks to Christy Gailei for spotting this one. |
| AB Calculus 30 Volume Area Take Home Student | 3/4/11 | Exam 30 | Changed isosceles triangles to isosceles right triangles on problem 5. Thanks to Jen Parker. |
| AB Calculus 33 Inverses Quiz Solutions | 3/4/11 | If purchased, contact us for link. | Typo in #1 solution. |
| AB Calculus 30 Volume Area Take Home Solutions | 3/4/2011 | If purchased, contact us for link. | Various changes, mostly typos. Thanks to Jen Parker. |
| AP Calculus AB Manual Solutions | 3/3/11 | If purchased, contact us for link. | Page 175 - added 4 pictures that explains the answers for the shapes better. Thanks to Jen Parker. |