Comments on: Math 2B: Final exam info

By: Level

Level — Mon, 10 Dec 2007 03:36:38 +0000

Gonna have to side with Greg on this one. Hoping for the best is a poor substitute for blatantly deciding to not prepare yourself. He isn’t overly-pessimistic, but rather, you’re overly-optimistic.

On that note, I’m absolutely defecating myself over the test tomorrow. Gonna be a looong night..

By: gregknese

gregknese — Mon, 10 Dec 2007 00:32:19 +0000

I would love to argue that my view is not pessimistic but here is not the place.

By: GW

GW — Sun, 09 Dec 2007 20:37:48 +0000

Dear Greg,

Thank you (for the question). No thanks (for the advice) because that is the most pessimistic view on life, hahahahaha. That’s why I am not majoring in math–I would like to keep my happy view on life.

By: gregknese

gregknese — Sun, 09 Dec 2007 19:55:55 +0000

Dear GW,
For polar coordinates you go from 0 to because that takes you all the way around the circle.

You are of course free to skip anything you like. I never advise hoping for the best though.

Dear Jesus,
I’d say more heavily on recent stuff.

By: Jesus.

Jesus. — Sun, 09 Dec 2007 19:51:38 +0000

Is the final going to be based more heavily on the most recent stuff or is there an equal amount of everything.

By: GW

GW — Sun, 09 Dec 2007 19:43:50 +0000

Yes, you are correct. Although for plotting a bunch of points…should I just do pi to 2pi? Cuz in you examples you usually gave a domain of some sorts…

How about I just skip Newton’s law of cooling and just hope for the best?

By: gregknese

gregknese — Sun, 09 Dec 2007 19:11:25 +0000

Understanding the big picture is of course important. But, the whole point of understanding the big picture is that it should make the little picture easier.

On #7, your confusion most likely stems from the wording. Am I right? I try not to have confusing wording on exams.

If you are memorizing Newton’s Law of Cooling, then you don’t understand Newton’s law of cooling. It says the difference between an object’s temperature and the surrounding temperature decays exponentially with time. What could be simpler?

By: Grandma

Grandma — Sun, 09 Dec 2007 19:00:54 +0000

Thanks, I will look over the vids again…Btw, I want to concentrate on studying the big picture calculus stuff we learned this quarter…if I still don’t understand the extra credit web #7 problem, would I be ok? I don’t have time nor space in my memory to know formulas for small things like Newton’s Law of Cooling…

By: gregknese

gregknese — Sun, 09 Dec 2007 18:48:54 +0000

Grandmother Willow,
I did several examples of sketching polar curves in videos. One way is to plot a bunch of points, and the other is to figure out what the curve is in regular (x,y) coordinates. In this case I recommend plotting a bunch of points. (Also, just to make sure you aren’t looking at “concept check” #7 are you? I was referring to “exercise” 7 on page 733 above.)

By: Grandmother Willow

Grandmother Willow — Sun, 09 Dec 2007 07:42:10 +0000

We never did any problems like number 7 on page 732 (you recommended it though, by accident hopefully?)…should we know how to do it? If so, then how do I go about solving that problem?