New Office Hours

(also posted on the syllabus)

M2:40-3:30PM
W12:00-12:50PM,
Fr 1:10-2:00PM

Limits (just for funzies)

Lecture Notes 1/22/18 through 1/29/18

Lecture Notes

10.5#12 and #14 (The Rules)

I don't know how to approach the problem.

and

I keep on getting this problem wrong. I don't know where I am making a
mistake.

*************************
Well, it looks like you figured it out after awhile, and that's all to the good. In a lot of these situations people were just making an arithmetic mistake and fixed it on their own after a few minutes, which is good practice for the exam.

There is an issue I want to bring to your attention though, which is documenting your own due diligence when you asl for my help on a problem. I will have a much easier time helping you if I know what your already tried--and if I know that you did the basics like READ THE TEXTBOOK SECTION. I am often surprised how many people didn't pick that basic notion in the course of their education before now, and I don't want you to go through my class without the same misunderstanding. Moreover the ability and willingness to undertake the effort to gather the basic foundational skills is an important sign of professional maturity, and the profession will often be impatient or unkind if it judges you lacking in this regard.

10.3#5

I have no idea how to format the response for #5 on 10.3, i understand the
process but first vector value is throwing me off.

***************************
It looks like you figured it out ok after all.  But look, finding a vector v orthogonal to some other vectors,  <3,-1,0> and <0,-1,-3>  in this case, only depends on the direction of v. Specifying the particular value of some entry, the first in this case,  is a way of specifying a particular vector in that direction--because it makes it easier for the webwork software to check that the answer is correct

A nag

You told us in class that you would move the due date of 10.5 to Saturday. It is 4 hours until the due date closes and I am, in your words, nagging you :)

Thank you for your time

Dr. Taylor,

Earlier today in the 10:45 class we were told that 10.5 would be extended one day. I just wanted to confirm that this would happen since I checked online and 10.5 said it was still due 1/25 at midnight. I was hoping to get some clarification on whether that assignment would be due today or tomorrow.

Thank you so much!

Sincerely,

Good Afternoon Dr. Taylor,

I apologize to email you the day of but I wanted to see what the possibility was of having Webwork chapter 10.5 extended. I have had a rough time staying on pace with the course load thus far. I appreciate your consideration in advance.

Thank you

Hey Prof. Taylor,

I'm just here to nag you about pushing the homework due date to the 27th. 

Thanks,

Hello Dr. Taylor,

Just a reminder to change for you 10.5 homework to be due tomorrow 1/27 instead of tonight 1/26.

Thank you very much,

****************

Yes, thanks, did so.

Section 10.5

Dr.Taylor,

       I am really struggling with all of 10.5 webwork and I have been using all the resources available to me. I do not think you taught this section in class and I was wondering if you could move the deadline back? Or how can I get help from you?
Thank you,

****************

It's all really about r(t)=u+tv , i.e. parametric lines, and v.(<x,y,z>-u)=0,  so we did cover it.  Sure, I'd be happy to help.  And how about if we push the deadline for this section back to Saturday night?

Lecture Notes 1/17/18 through 1/19/18

Lecture Notes 

10.2#9

I got the answer but I don't know how to format it. It says that "Operands for '+' must be of the same type"

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That's because -6i+3j is a vector and you're trying to add 6z to it which is a scalar variable.  I think you meant to have +6k. Also, you do have the right direction but that vector has length √((-6)^2 + 3^2+6^2)=√(36+9+36)=√81=9, which is three times long as you want.

Lecture Notes 1-10/12-18

Lecture Notes January 10 and 12

I am worried about my grade

Welcome to MAT267, and some useful information

Hi All, welcome to your MAT267 blog. You can look here to find assignments, posted scores & estimated grades, questions and answers. I SUGGEST THAT YOU BOOKMARK THIS PAGE, and also subscribe to email updates to this blog in the subscription field to the right.

1) Your Posting ID. Your Posting ID will be used to identify your scores. You should not share your Posting ID or do anything to compromise it's security. To quote from this link:

Posting ID
Your Posting ID is a seven-digit number composed of the last four digits of your ASU ID number plus the last three digits of your Campus ID number, separated by a hyphen. Your Posting ID is printed on the class rosters and grade rosters your professors work with. You can also view your Posting ID on the My Profile tab in My ASU.

2) For that matter, especially don't do anything to compromise the security of your ASU or Campus ID numbers--they can be used to for identity theft or invade your privacy. For instance, DO NOT SEND ME YOUR ID'S BY EMAIL--I don't need them to interact with you and email is an inherently insecure form of communication.

3) The first homework assignment is sections 10.1 and 10.2, which due on Friday January 19 at 11:59 PM.