Erm, I just guessed, and got them all right in 2 shots. whoa. That's never happened before.

a)

A=2

B=1

D=1

F=2

b)

A=2

B=4

D=2

## Search found 11 matches

- Sat Jan 26, 2008 4:23 am UTC
- Forum: Mathematics
- Topic: I humbly request you help once more.
- Replies:
**10** - Views:
**1808**

- Sat Jan 26, 2008 4:20 am UTC
- Forum: Mathematics
- Topic: I humbly request you help once more.
- Replies:
**10** - Views:
**1808**

### Re: I humbly request you help once more.

Whenever I do the integration, I don't end up with an answer that really looks anything like that. It's kind of a problem.

- Sat Jan 26, 2008 3:35 am UTC
- Forum: Mathematics
- Topic: I humbly request you help once more.
- Replies:
**10** - Views:
**1808**

### I humbly request you help once more.

Your reward for this: exactly 2.5 internets, payable to you as you see fit. Also, they're tax-free. Refer to the integral below. int (sin(t))^2 dt (a) Evaluate the integral using integration by parts. Give your answer using the form below. (-1/A)sin(Bt)cos(Dt) + (1/F)t + C A = B = D = F = (b) Evalua...

- Tue Nov 27, 2007 4:05 am UTC
- Forum: Mathematics
- Topic: Please to Help Me, xkcd community!
- Replies:
**6** - Views:
**1509**

### Re: Please to Help Me, xkcd community!

Yay. You guys rock. I'm going to go have some ginger ale or something.

- Tue Nov 27, 2007 3:12 am UTC
- Forum: Mathematics
- Topic: Please to Help Me, xkcd community!
- Replies:
**6** - Views:
**1509**

### Please to Help Me, xkcd community!

Hey guys, I've got two math problems to do tonight, but I'm sick as a dog and my mind won't work. Please to help. 1) A car, initially moving at 60 mph decelerates at a constant rate and stops 2 miles away (note that we do not know the initial position). What is the deceleration? Initial position = ?...

- Wed Oct 31, 2007 5:29 am UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0336: "Priorities"
- Replies:
**141** - Views:
**27902**

### Re: "Priorities" Discussion

Blipo wrote:Gamche wrote:I now must try this oh well here goes my 4.0. Anyways don't some schools give away E's instead.

Does *any* schools give Es?

Gamchie/Dynastic, post in the Welcome thread, please. >_> (Am I even allowed to say that at <50 posts?)

E's replaced F's here at the University.

- Wed Oct 31, 2007 4:28 am UTC
- Forum: Mathematics
- Topic: I should know this...gah!
- Replies:
**10** - Views:
**1606**

### Re: I should know this...gah!

A=4*Sin(theta)(8+(8+16cos(theta))) A=4*Sin(theta)(8+8+16cos(theta)) A=4*Sin(theta)(16+16cos(theta)) A=16*4*Sin(theta)(1 + cos(theta)) A=64*Sin(theta)(1 + cos(theta)) d'oh. I must need sleep. Should that 64 drop out? Otherwise, I get: dA/d(theta) = 64*cos(theta) * (1+cos(theta)) + sin(theta) * (64si...

- Wed Oct 31, 2007 4:11 am UTC
- Forum: Mathematics
- Topic: I should know this...gah!
- Replies:
**10** - Views:
**1606**

### Re: I should know this...gah!

I did the second one, but I used the outside angle as theta to make the calculations easier. Once you find the value of theta you can just take 180 - theta to get the value you need. I started with A = .5h(B1 + B2) h = 8Sin(theta) (If theta is the outside angle, the height of the trapezoid is going...

- Wed Oct 31, 2007 3:26 am UTC
- Forum: Mathematics
- Topic: I should know this...gah!
- Replies:
**10** - Views:
**1606**

### I should know this...gah!

Hey guys. Your help would be much appreciated. A manager of a store notes that if she charges $20 for on item, then, on average she sells 179 items per week. For each $1 increase in price, the number of sales per week drops by 5. What price will maximize the revenue? I can't set up the function. >_<...

- Fri Oct 12, 2007 4:37 pm UTC
- Forum: Individual XKCD Comic Threads
- Topic: 0328: "Eggs"
- Replies:
**166** - Views:
**34421**

### Re: "Eggs" Discussion

You know, that polar bear pickup only works if they DON'T know the average weight of a polar bear. You: Hey, do you know how much a polar bear weighs? Them: About 500 pounds (I'm not looking it up). You: Enough to-...wait, what? This topic reminds me: You: Baby, I'm like a derivative to your functio...

- Fri Sep 07, 2007 11:51 pm UTC
- Forum: Music
- Topic: Totally inappropriate "our song"s
- Replies:
**46** - Views:
**6792**