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Search took 0.03 seconds. Search: Posts Made By: dag12
Forum: Homework & Help 10-24-2013, 01:42 PM
Replies: 11
Views: 5,052
Posted By dag12
Re: I need help :S I will give 50 000 credits if you help with all questions :3

It's ok. Hope I answered all your questions. If you have further questions, feel free to ask.
Forum: Homework & Help 10-23-2013, 07:32 PM
Replies: 11
Views: 5,052
Posted By dag12
Re: I need help :S I will give 50 000 credits if you help with all questions :3

I still don't really understand the question.

Integration of the expression yields
g(x) = -x^11*sin(kx^7) + C
You can solve for C by substitution of x = 1, but then they want you to find the...
Forum: Homework & Help 10-23-2013, 06:07 PM
Replies: 11
Views: 5,052
Posted By dag12
Re: I need help :S I will give 50 000 credits if you help with all questions :3

4. Your work is largely correct.
However,
(240 - 96y^2) / (-3y^2 - 16y + 20) = y'(x) is not correct; what you've attempted to find is y'(1).

Furthermore, 240 should be -240; hence the correct...
Forum: Homework & Help 10-23-2013, 05:12 PM
Replies: 11
Views: 5,052
Posted By dag12
Re: I need help :S I will give 50 000 credits if you help with all questions :3

ok, I will help. I will edit this post as I go along.

1. F = Km1m2/(s^2)
dF/ds = -2Km1m2/(s^3)
ds = dF / [-2Km1m2/(s^3)]

In the limit of small changes, we approximate the differentials dF and...
Forum: Technology 09-4-2013, 08:39 PM
Replies: 17
Views: 2,885
Posted By dag12
Re: Coding in C: help with if statements

Do you know how strings (really an array of characters in C) work in C? Are you familiar with the concept of pointers?

In any case, using strcmp() when comparing strings will likely solve your...
Forum: FFR General Talk 08-1-2013, 05:52 AM
Replies: 119
Views: 6,368
Posted By dag12
Re: 1-13 Difficulty Titles

I like something like "For Prodigies Only"
I like it because prodigy to me implies something of a natural talent - in my opinion, the 90+ range is a range that some people will never be able to do...
Forum: Chit Chat 03-25-2013, 10:47 PM
Replies: 42
Views: 3,762
Posted By dag12
Re: SATs

2400 here.
My advice for the writing section: practice, practice, practice - especially the error identification portion. The errors that the SAT tests are really limited, so by the time you go into...
Forum: Homework & Help 02-17-2013, 07:51 PM
Replies: 4
Views: 2,303
Posted By dag12
Re: [College Physics] - Schrödinger's equation

Regarding question 1, the problem is that you should be comparing it relative to the energy itself. That is, you should be calculating ΔE_n/E_n, which, as you will see, goes to zero as n→∞, in...
Forum: Homework & Help 02-17-2013, 07:44 PM
Replies: 4
Views: 2,303
Posted By dag12
Re: [College Physics] - Schrödinger's equation

I can help. Give me a short while to respond.
Forum: Homework & Help 01-15-2013, 12:22 AM
Replies: 12
Views: 3,911
Posted By dag12
Re: [differential equations] stuck on a problem

I'm assuming you made up the problem or something just to see how to go through solving a system of linear equations. The particular problem you posed has no solution, but qqwerf's post regarding...
Forum: Homework & Help 01-15-2013, 12:09 AM
Replies: 12
Views: 3,911
Posted By dag12
Re: [differential equations] stuck on a problem

The second one doesn't have a solution. Did you type it correctly?
For reference:...
Forum: Chit Chat 12-13-2012, 12:50 AM
Replies: 50
Views: 4,319
Posted By dag12
Re: post your winter '13 class schedule!

I was thinking Math and East Asian Studies major haha.
Forum: Chit Chat 12-12-2012, 07:40 PM
Replies: 50
Views: 4,319
Posted By dag12
Re: post your winter '13 class schedule!

Woooo chem major!

For me:
Advanced Quantum Chemistry
Relativistic Quantum Field Theory
Instrumental Design And Mechanical Arts
Statistical Thermodynamics
Group Theory

Fun fun
Forum: Homework & Help 12-10-2012, 01:45 AM
Replies: 2
Views: 1,984
Posted By dag12
Re: Aaaah! Math problem!

Start with equation 3.
If we want to evaluate [2,n], then m=1 and we can let the n in the equation be replaced with n-1, assuming that n>1, so that n-1 is also a natural number. This yields...
Forum: Homework & Help 12-6-2012, 09:09 PM
Replies: 7
Views: 3,469
Posted By dag12
Re: Logarithmic Differentiation

I won't do these since they're just grindy algebra, but wolframalpha.com should help.
Forum: Homework & Help 11-24-2012, 06:09 PM
Replies: 3
Views: 2,438
Posted By dag12
Re: [Community College] Thermodynamics

You can treat it as two separate problems. Just remember to use the summed mass of the first two components when you account for the final component.
Forum: Chit Chat 10-31-2012, 10:14 PM
Replies: 21
Views: 1,772
Posted By dag12
Re: Relaxed thread

I've used it. It's not an easy book - it's usually read by junior or senior physics majors. It requires a decent familiarity with math.
Forum: Chit Chat 10-4-2012, 09:28 PM
Replies: 291
Views: 25,109
Posted By dag12
Re: Psychopath Thread

Haha I remember this game! I beat it, and then the server got wiped or something :/
Forum: Chit Chat 09-30-2012, 09:38 PM
Replies: 7
Views: 1,489
Posted By dag12
Re: MarioNintendo Geometry/Algebra problem about pizza

Use the r:r^2:r^3 theorem.

For two similar 2D shapes, if the lengths are in the proportion of r:1, then the areas are in the proportion of r^2:1

So that just means just cut it so that one of...
Forum: Critical Thinking 07-13-2012, 12:23 AM
Replies: 47
Views: 18,999
Posted By dag12
Re: The World's Hardest Sudoku (June 2012)

Just checked with a program that uses all known 'human-like' techniques to solve sudoku puzzles, and it wasn't able to solve it.
Solving it by brute force guess and check, I've verified that there's...
Forum: Critical Thinking 07-12-2012, 11:43 PM
Replies: 47
Views: 18,999
Posted By dag12
Re: The World's Hardest Sudoku (June 2012)

If there's only one unique solution, you could technically 'logically' disprove every other alternative to get to the solution. By definition, that's still logic.

Though of course, whether that...
Forum: Critical Thinking 07-12-2012, 11:29 PM
Replies: 47
Views: 18,999
Posted By dag12
Re: The World's Hardest Sudoku (June 2012)

As far as I know, there isn't a clean logical way to do it.
My method used a brute force proof by contradiction haha (though for many places where there are two possible choices, it's hard even to...
Forum: Critical Thinking 07-12-2012, 10:14 PM
Replies: 47
Views: 18,999
Posted By dag12
Re: The World's Hardest Sudoku (June 2012)

Nevermind, got my first number.
Edit: And solved by hand.
Forum: Critical Thinking 07-12-2012, 09:13 PM
Replies: 47
Views: 18,999
Posted By dag12
Re: The World's Hardest Sudoku (June 2012)

are we guaranteed that there exists only one unique solution? If not, it would explain why it's easy to solve via guess and check, but hard to solve via logic.
Forum: Chit Chat 06-18-2012, 01:15 AM
Replies: 16
Views: 1,636
Posted By dag12
Re: Blood, Sweat and Tears.

Why are all your gi s all brown? They look like sweat stains, do you guys not wash your uniforms?
Also, what style?
Congrats, by the way!
Forum: Homework & Help 05-15-2012, 07:14 AM
Replies: 4
Views: 1,604
Posted By dag12
Re: Stuck with an old math question

starting from 2x/(2*sqrt(x^2 + 2500)) + (2x - 200)/(2*sqrt(x^2 - 200x + 16400)) = 0,
move one term over to the other side of the equal sign. Then cross multiply. You should be able to solve it from...
Forum: Homework & Help 05-6-2012, 09:11 PM
Replies: 2
Views: 1,132
Posted By dag12
Re: [Precalc Algebra] Systems of Nonlinear Equations

silly you,
y+x=8 is
x=8-y
:P
Forum: Critical Thinking 04-28-2012, 07:02 PM
Replies: 20
Views: 3,020
Posted By dag12
Re: What If You Were a High School Senior?

As Netjet stated, it really does depend on the financial aid.
Personally, given the financial aid that my private school is providing me, it's far cheaper for me to be attending this school than a...
Forum: Chit Chat 04-13-2012, 02:35 PM
Replies: 10
Views: 1,003
Posted By dag12
Re: The Language Translation Thread

My guess is that you're asking a Japanese person about PE? :P
Forum: Chit Chat 03-27-2012, 10:21 PM
Replies: 86
Views: 5,547
Posted By dag12
Re: I got a 3!!!

Ugggghhh he is a douche. I was lucky to never run into him because of the age difference, but I saw him when I was proctoring the exam for the state competition.
He kept saying "this is so easy;...
Forum: Chit Chat 03-27-2012, 09:41 PM
Replies: 86
Views: 5,547
Posted By dag12
Re: I got a 3!!!

I still watch the national countdown round on ESPN (I think?) every year haha. Those kids are INSANELY fast.

Oh, also, for anyone who doesn't know what the countdown round is:...
Forum: Chit Chat 03-27-2012, 09:27 PM
Replies: 86
Views: 5,547
Posted By dag12
Re: I got a 3!!!

... and history lol.

I get strange looks when I tell people I'm double majoring in those fields!
Forum: Chit Chat 03-27-2012, 09:18 PM
Replies: 86
Views: 5,547
Posted By dag12
Re: I got a 3!!!

I did mathcounts too! Countdown rounds were my favorite back in the day. :3
I did the standard AMC 10/12, AIME, USAMO, and made the IMO selection camp (MOP) back in high school.
Haven't done much...
Forum: Chit Chat 03-26-2012, 08:14 PM
Replies: 86
Views: 5,547
Posted By dag12
Re: I got a 3!!!

Teehee, the AIME is easy enough to get 12+ on if your practice and look at all the past questions.
They become really patterned, especially combinatorics or number theory problems. I always did...
Forum: Chit Chat 03-26-2012, 08:05 PM
Replies: 86
Views: 5,547
Posted By dag12
Re: I got a 3!!!

Yeah, nth percentile means you did better than n% of the people. Crash course in math for the day!
But yeah, I'm not sure how I did lol. I haven't checked, and I haven't been to my school's math...
Forum: Chit Chat 03-26-2012, 07:40 PM
Replies: 86
Views: 5,547
Posted By dag12
Re: I got a 3!!!

It's an extremely difficult proof-based test. Kinda like the USAMO or IMO, but harder. (though those are for the high school kids haha.. Good times)
Also, I'm confused how 50th percentile -> 33rd...
Forum: FFR General Talk 03-10-2012, 01:57 AM
Replies: 37
Views: 3,288
Posted By dag12
Re: New Songs: March 9th, 2012!

Yeees. And with lots of fun rhythms, PLEASE. OSTER's piano solos have tons of fun rhythms, but you can pack in more right? hehe
I will even sync it myself if you do it :P
Forum: FFR General Talk 03-9-2012, 02:07 AM
Replies: 37
Views: 3,288
Posted By dag12
Re: New Songs: March 9th, 2012!

There are actually more than that. The female vocalist one is fan-made, done through niconicodouga. So other people on that site have covered it too, including a male vocalist:...
Forum: Chit Chat 03-8-2012, 10:53 PM
Replies: 61
Views: 3,930
Posted By dag12
Re: Most Inappropriate thing you Laughed at

Lol I -love- Helen Keller jokes!

Why couldn't Helen Keller drive?
Forum: FFR General Talk 03-2-2012, 01:31 AM
Replies: 47
Views: 3,759
Posted By dag12
Re: New songs: March 1st, 2012!

Wait I did? Haha I don't remember sending songs to bmah at all haha. Whoopsey haha
Forum: FFR General Talk 03-2-2012, 01:17 AM
Replies: 47
Views: 3,759
Posted By dag12
Re: New songs: March 1st, 2012!

Wait how do you know this haha
Forum: Chit Chat 02-29-2012, 11:11 PM
Replies: 24
Views: 1,929
Posted By dag12
Re: Japanese Language

Si! My Japanese is just as poor :(
Forum: Chit Chat 02-29-2012, 09:54 PM
Replies: 24
Views: 1,929
Posted By dag12
Re: Japanese Language

?
no hablo japonés o inglés :(
Forum: Chit Chat 02-16-2012, 07:27 AM
Replies: 25
Views: 2,087
Posted By dag12
Re: Having a legit Mathsma Attack right now..

Nullspaces and eigenvectors ahoy!
I don't know about Cal's math system or how 54/55 is compared to the standard math class, but you'll be fine, hopefully haha!
Good luck~
Forum: FFR Batch Forum 01-4-2012, 08:19 AM
Replies: 9,655
Views: 1,037,314
Posted By dag12
Re: Queue/Batch Discussion Thread v2 (Submission Closed)

Or just be more rigorous with judging. Tougher judging means higher quality files and fewer number of submissions due to fewer SA points.
Forum: Chit Chat 01-1-2012, 01:16 AM
Replies: 74
Views: 3,838
Posted By dag12
Re: 2012 Firsts!

how... it takes me like a month just to finish 1 file -_-
Forum: Chit Chat 12-12-2011, 04:22 PM
Replies: 10
Views: 3,692
Posted By dag12
Re: beep beep anyone that knows Japanese

Lol just from the cover they're talking about boobs (the F on top is for F cup).
Forum: Chit Chat 12-12-2011, 12:31 PM
Replies: 10
Views: 3,692
Posted By dag12
Re: beep beep anyone that knows Japanese

It's basically a tabloid that covers a lot of gang and sex-related gossip.
Forum: FFR Songs and Artist Permissions 12-12-2011, 02:51 AM
Replies: 76
Views: 23,990
Posted By dag12
Re: Denied Artist Permission Requests

Wait really? Nooooo :(
Forum: Chit Chat 11-27-2011, 10:11 PM
Replies: 62
Views: 3,284
Posted By dag12
How good is your sense of rhythm?

How good are fellow FFRers' senses of rhythm?
Do you think playing FFR has improved your sense of rhythm?

Take the test here:
http://tonometric.com/rhythmdeaf/

Personally scored 88%. I...
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