The scores that made your final grade

this is your warning(your handwriting on the exam)

I'm just grading your quizzes, and am thereby motivated to point this out to you:
If your handwriting is so small or so illegible that I can't read what you've written, you will get no credit for your work.

Office Hours Finals Week

I will be holding my normal office hours before your final exam.

The Final Exam, 2nd Notice

The final exam will take place on Tuesday, December 8, from 7:10PM to 9:00PM in BAC216

Topics to be covered and other random angst...

A random sample of emails: 
1) Hi professor, There are two questions i want to know about final exam. Firstly, i'm not sure the contents to be covered. I finished the final review, but i found it didn't cover all sections which we learned. So, I wanna know did it include all things we need to review? or we need to review more sections?  In addition, could you tell me the form of this final exam? does it include both multiple choice and free response, or only free response, or something else?

2)  Dear Dr. Taylor,

When looking through the final review that was posted here, https://math.asu.edu/first-year-math/mat-267-calculus-engineers-iii , I noticed that it does not cover all of the sections we learned; for example, it skips from 10.5 to 10.9. Does this accurately reflect what is going to be on the final, or should we study for all of the topics we covered in class? 

Thank you for your time.

3) Professor,

You said about two weeks ago that you'd post an update on everyone's gardes insofar onto the blog. I figured you'd eventually get around to it, but that hasn't happened. Did you think you shouldn't since most people in the class don't bother to read your blog?

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

OK, first of all, the final exam is cumulative.  For you, that means anything and everything we have covered is fair game. Since I spent my breath and time lecturing on it, it's also likely to be covered on the exam. Since subjects learned early in the course are used later in the course, I will sometimes kill two birds with one stone and test the early material and the later material in the same question--but this does not constitute a promise that I will do so.   

My first priority is grading at the moment is getting your quizzes graded and recorded.  If I have the time before the final exam I might get around to re-estimating your grades.  BUT REALLY-you have everything that I have graded and at this point in the semester you should have a very good idea about where you stand.  

webwork problems

A small sample of the emails I've just been getting:

1) Hello Professor,

I'm in your MWF 10:30-11:50 class and I was trying to get onto Webwork to finish up the homework due tonight after *************, but I couldn't log in to myASU. I know it's really close to finals, but is there any possibility you could extend the deadline a day? If I'm the only one who's been having the problem, I understand if you don't. But I could really use all the points I could get, so if you do I would appreciate that.

Your student,

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

2) Hello Professor Taylor,

I noticed while i was trying to complete the last couple of problems on the 13.7 webwork that blackboard is down and is unable to sign anyone into their my asu to log on to webwork. if it would the possible to extend the deadline for the webwork.

Thank You,

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

3)   Web work pausing and not allowing access. I have like three problems left. Please let us in. Or something.

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

Webwork deadline is delayed until Sunday night due to network problems. 

13.7 #7

Dear Professor Taylor, This problem has me really stumped I don't know what it is asking for the second to last portion because I have entered r dr dtheta as the usual substitution of dA. But it wants it in vector form. Can you please clarify what WebWork wants exactly.

Thank you,

























ok, you have a couple of different confusions going on here:

1) this is a good example of the diversity of notation surrounding this integral: what this problem wants to call a vector dA is what we have been calling n dS. (In support of my rant earlier today about "Flux Integrals",  you might want to note that wikipedia distinguishes two kinds of "surface integrals" as I do, surface integrals of functions and surface integrals of vector fields, that the textbook calls flux integrals)

2) just to confuse the issue a little bit more, this is a parametric integral, not an integral in polar coordinates.  What this means is that the element of area for polar coordinates r dr dθ is NOT the appropriate element of area for this problem.  What you need is just (r_r x r_θ)dr dθ, (note the additional confusion of r being the parametric equation while r is just a parameter) and the correction term r is not used (it sort of gets absorbed into the  r_r x r_θ). Since

  r_r x r_θ=<cos(θ),sin(θ),1>x<-r sin(θ), r cos(θ),0>=<-r cos(θ), -r sin(θ), r>, which is pointing upward and not downward, so your correct answer to part (b) would be
- r_r x r_θ drdθ.  
This is *almost* what you have, you just forgot to multiply the drdθ times the first two components of your vector.

announcing....

Extra credit quiz covering section 13.7 on FRIDAY