WeBWorK: 6b-Modeling-Cooling and 7-Trench-EulersMethod will be due on Tuesday 3/5 at midnight.
OpenLab: none
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Exam #1 will take place on Tuesday, 2/26, covering material through Sec 4.1. A review sheet will be distributed on Tuesday, 2/19, and posted to the OpenLab.
WeBWorK: Assignment 6a-Modeling-Population will be due on Tuesday, 2/26, at midnight.
NOTE: Assignment 6b-Modeling-Cooling will be due one week after the exam, on Tuesday, 3/5, at midnight.
OpenLab: none
WeBWorK: Assignment 5-Exact Due Tuesday 2/19 at midnight
NOTE: As announced in class today, the WeBWorK assignments from last week have been extended until next Tuesday, 2/19 at midnight:
3-Separable , 4-Bernoulli-nosub and 4b-Homogeneous-YoverX due Tuesday 2/19 at midnight.
OpenLab: none
NOTE: City Tech will be closed next Tuesday, 2/12/19, for President’s Day.
WeBWorK: 3-Separable , 4-Bernoulli-nosub and 4b-Homogeneous-YoverX. Due Thursday 2/14 at midnight
OpenLab: Complete your first OpenLab Assignment “Advice from the Past” by Thursday, 2/14, at the beginning of class.
In Fall 2014 I taught this course and at the end of the semester, I gave my students the following assignment:
Imagine that you are invited to speak on the first day of MAT 2680, to give advice to entering students. Write at least three sentences … describing what you would tell them.
To see the assignment and the students’ responses, follow this link.
Your assignment, due at the beginning of class next Thursday, February 14th, is to:
- Read through ALL the responses (there are 63 of them, but many of these are short replies to other comments).
- Write a reply to this post (1 paragraph) responding to all of the following:
- What advice seemed most relevant to you personally? Why? (you can copy/paste a short statement, or put it in your own words)
- Based on this advice, what changes can you make right now to help you succeed in this course?
Extra Credit. For extra credit, write a response to one of your classmates’ comments. Do you have any advice? Be kind.
Having trouble with the WeBWorK? First, don’t panic – it’s a lot to remember!! But do be prepared to put in some time re-learning stuff from Calculus I and II. I’ve picked out a few video resources for you that hit some of the most important techniques (I tried to find videos that were focussed on examples, rather than theory, since this is meant to be review).
Comments are welcome (just click the “leave a comment” button above).
- Like a video? Leave comment and let me know.
- Dislike a video (it wasn’t helpful/ it was confusing)? Let me know.
- Need help with another topic (like the product rule, or equations of tangent lines, or something else)? Let me know.
- Have a video or other resource to suggest? Let me know!
Derivatives: The Chain Rule (similar to Problem 4): This video is short and sweet, a single example using the chain rule with a logarithmic function.
Integrals: U-Substitution (similar to Problems 5 & 6):
This video has three examples – the first two are most similar to what you will see in WeBWorK (the last one is a little trickier – but could be useful in the future):
Integration by Parts (similar to Problems 7 & 8)
This video also has a few examples – the first two will be most useful for the WeBWorK:
WeBWorK is accessible from on and off campus, anywhere you have access to the internet. Your first two WeBWorK assignments are due next Tuesday, February 5th, at midnight.
To get started, you must complete the following three steps.
Step 1. Log in to WeBWorK here: http://mathww.citytech.cuny.edu/webwork2/MAT2680-S19-Reitz/. I have created Usernames and Passwords for each student registered for my class.
Username. Your username for WeBWorK consists of your first initial plus your last name, all lowercase (for example, John Smith would have username ‘jsmith’).
Password. Your password is your Student ID (EmplID in CUNYFirst)
Step 2. Update your email address if you wish. To do this, select “Password/Email” from the main menu on the left. Use whatever email address you like (I suggest using one that you check often).
Step 3. Complete the first two assignments, by clicking on them on the main screen.
If you have any trouble – either with logging in, or with completing the assignment, post a comment here or send me an email and I will get back to you.
WeBWorK Tips:
- Click on a problem to see the details (the list of problems appears in the menu on the left). Enter an answer and hit “Submit Answers”. Don’t worry, if you get it wrong you can try it again.
- You can work on the problems in any order you wish. You can do some problems now, and come back and do the rest another day (your work will be saved, as long as you submit your answers).
- If you want to print out a copy of the assignment, click on the assignment name in the main menu on the left, and then click the link in the main screen area that reads “Download a hardcopy of this homework set.”
WeBWorK: 1-Review and 2-NonHomogeneousLinear, Due Tuesday 2/7 at midnight
OpenLab: sign up for the OpenLab using your City Tech email address, and join this course
NOTE: This is a great time to review your Calculus – derivatives and integrals. Know them inside and out! If you have questions, please ask me (ask in class, or post a question here on the OpenLab, or send me an email).
This course is MAT 2680, Differential Equations, taking place in the Spring 2019 semester with Professor Reitz. We will be using this website in a variety of ways this semester – as a central location for information about the course (assignments, review sheets, policies, and so on), a place to ask and answer questions, to post examples of our work, and to talk about mathematics, physics, reality and so on.
Getting Started
Anyone on the internet can look around the site and see what we are doing, and even leave a comment on one of the pages. However, only registered users can create new posts and participate in the discussion boards.
How do I register?
You will need to do two things:
- If you have not used the OpenLab before, you must first create an account. You will need access to your citytech email address for this. Detailed instructions for signing up on the OpenLab can be found here.
- Once you have created an account on the OpenLab, log in and then join this particular course, 2019 Spring – MAT 2680 Differential Equations – Reitz. To do this, first click the “Course Profile” link at the top left of this page (just above the picture). Then click the “Join Now” button, which should appear just underneath the square picture of a peaceful natural scene.
Problems with the OpenLab or with your CityTech email:
Please let me know if you run into any problems registering or joining our course (send me an email, jreitz@citytech.cuny.edu). I also wanted to give you two resources to help out in the process:
1. For problems with your citytech email account, contact the Student Helpdesk, either in person, by phone, or by email:
Student Helpdesk
Library (Atrium) Building 114
718-260-4900
Monday – Wednesday: 8:30am – 6:00pm
Thursday: 8:30am – 5:00pm
StudentHelpDesk@citytech.cuny.edu
2. For problems registering for the OpenLab, contact the OpenLab admin team, either by email at openlab@citytech.cuny.edu, or by following this link.
