Monthly Archives: October 2016

Quiz 3


Quiz 3 is in the MLC, don’t forget to bring your UBC card.

Her are the common mistakes you made in the quiz:

  1. Not a mistake per se, but some tried to log both sides of the equation before deriving and ended up with a more complicated exercise.
  2. Some of you confused dy/dz with dz/dy. Remember, dy/dz means deriving y(z), i.e. y as a function of z.
  3. Most of you got this right but didn’t write your answer clearly.
  4. Most of you confused this one or didn’t explain yourself at all. Please look at the solutions.
Solutions: quiz3a quiz3b quiz3c

Common Mistakes in Quiz 2


The quizzes should be in the MLC by Thursday morning, I will post here when they get there. There were a few common mistakes you should take under consideration when preparing to the midterm:

  • Question 1: Many tried to solve the equation instead of using IVT and some did use IVT while forgetting to state the function is continuous.
  • Question 2: Many got the derivative of e^(x^4) wrong. See that you know how to do it!
  • Quesiton 4: Many of you don’t remember the definition of the derivative, this will almost certainly appear in the midterm and it is a relatively easy problem once you write down the definition.

Good luck!

Quiz 1 Solutions

Quiz 1 Column A

Quiz 1 Column B

Quiz 1 Column C

A few common mistakes that I suggest you reflect upon before the midterm next week:

  • In the problem with compounded interest, many of you were confused regarding the values of n and t. I remind you that n is the number of compounds per year (that is, for a quarterly compund n=4, for monthly compund n=12 and for a daily one n=365) and t is the span of the loan measured in years (so half a year will give t=1/2, two years will give t=2 and one month is t=1/12).
  • Many of you had trouble with finding the slope of the demand function see that you know how to write the equations and solve them; if not: come to office hours!
  • Many managed to write the correct demand formula in terms of q=ap+b but failed to invert the equation to be and write it as p=cq+d. Once again, if you are unsure how to do this: come to office hours!

Quizzes, Teaching Replacement, Office Hours Cancellations


  1. Quizzes are in the MLC, in order to pick them up you need to bring your UBCcard. There were two unrecognizable quizzes so if you can’t find yours in the MLC plelas contact me on Wednsday after class.
  2. I remind you that in the following dates I won’t come to class and another instructor will replace me:
    • October 3rd
    • October 12th
    • October 17th
    • October 24th
  3. I won’t hold office hours on October 4th and please check the website before coming to office hours throughout October as I might need to cancel other office hours.
  4. On Friday we will have our second quiz. Please remember to bring your UBCcard with you so you can fill out your student numbers. Also, I remind you no calculators or any other electronic devices are allowed. You may only use your “cheat sheets”.

Shana Tove (“Happy new year” in Hebrew)