Search found 205 matches

by mdyrud
Mon Jun 14, 2010 7:47 pm UTC
Forum: Mathematics
Topic: TI calculators
Replies: 10
Views: 2632

Re: TI calculators

If you're still looking for a calculator, and leaning towards the NSpire, wait a bit longer before buying. They are coming out with a new model of the NSpire and NSpire CAS sometime this summer. Costs are comparable to the TI-84, within twenty bucks. They've redone the keypad and consolidated the le...
by mdyrud
Mon Jun 14, 2010 7:39 pm UTC
Forum: Mathematics
Topic: NUMB3RS Parody
Replies: 25
Views: 5128

Re: NUMB3RS Parody

Yeah, that is a problem with the show. At first, the stuff was somewhat plausible. By the fifth season, it was pretty much entirely hand-wavy on the scale of Star Trek.
by mdyrud
Mon Jun 14, 2010 2:12 am UTC
Forum: Mathematics
Topic: NUMB3RS Parody
Replies: 25
Views: 5128

Re: NUMB3RS Parody

I love Numb3rs. My girlfriend got me started on it, and I burned through all the seasons on DVD. It really isn't that good of math, but one thing that helps is this site. They take math that shows up in the episode, and look at it in detail. On some of the more recent episodes, where the math is rea...
by mdyrud
Sun May 23, 2010 2:27 am UTC
Forum: Science
Topic: Facepalm TV / Doing It Wrong
Replies: 553
Views: 56719

Re: Facepalm TV / Doing It Wrong

One thing that did irritate me was the new configuration of his suit after putting in the new power source. Did he really take the time to change the shape of the glowing chest piece before he went off to defend the American Way?
by mdyrud
Sat May 15, 2010 1:30 pm UTC
Forum: Science
Topic: Facepalm TV / Doing It Wrong
Replies: 553
Views: 56719

Re: Facepalm TV / Doing It Wrong

Basically they drop a mirror behind them... Wait, that wouldn't work at all. Do they shoot it out in front of the ship? That would slow it down in several ways, both with the recoil from shooting the sail, and the effect of the sail. You would have to carry one sail for every leg of the trip, unless...
by mdyrud
Thu May 13, 2010 2:05 am UTC
Forum: Science
Topic: Facepalm TV / Doing It Wrong
Replies: 553
Views: 56719

Re: Facepalm TV / Doing It Wrong

No, it's just his heart. He has a piece of shrapnel that is poking it ever so slightly, and if it weren't for the magnet it would work further into his heart and cause a heart attack. Whenever he takes out the reactor, he becomes weaker, since his heart becomes erratic. Still, that makes for a very ...
by mdyrud
Wed May 12, 2010 2:32 am UTC
Forum: Science
Topic: Facepalm TV / Doing It Wrong
Replies: 553
Views: 56719

Re: Facepalm TV / Doing It Wrong

I am going to simplify the heck out of this problem, but I will err on the side of caution. Using 1.8 square meters, and assuming a thickness of .635 cm (.25 in), we get 11,430 cc. Using the density of Titanium, 4.54 g/cc, we get 51.892 kg, or 114 pounds. Definitely to heavy to just toss around.
by mdyrud
Tue May 11, 2010 9:35 pm UTC
Forum: Science
Topic: Facepalm TV / Doing It Wrong
Replies: 553
Views: 56719

Re: Facepalm TV / Doing It Wrong

Oh, I certainly enjoyed the movie. The thing that annoyed me more than the new element thing was the suitcase Iron Man suit at the beginning. Seriously, you're carrying around a Gold/Titanium Alloy suit the size of a briefcase? That would still weigh a ton. A gold/titanium suit with thrusters capab...
by mdyrud
Sun May 09, 2010 10:40 pm UTC
Forum: Science
Topic: Facepalm TV / Doing It Wrong
Replies: 553
Views: 56719

Re: Facepalm TV / Doing It Wrong

Oh, I certainly enjoyed the movie. The thing that annoyed me more than the new element thing was the suitcase Iron Man suit at the beginning. Seriously, you're carrying around a Gold/Titanium Alloy suit the size of a briefcase? That would still weigh a ton.
by mdyrud
Sat May 08, 2010 5:36 pm UTC
Forum: Science
Topic: Facepalm TV / Doing It Wrong
Replies: 553
Views: 56719

Re: Facepalm TV / Doing It Wrong

Anyone else seen Iron Man 2? Not a terrible movie overall, but the science made me cringe... a lot.
Spoiler:
Seriously, do they really need to say he builds a particle accelerator in his house to create a new element? Why not have him buy the LHC or something?
by mdyrud
Wed Apr 28, 2010 2:09 pm UTC
Forum: Mathematics
Topic: name that equation
Replies: 4
Views: 1018

Re: name that equation

That's actually a pretty useful trick to know to help square larger numbers. Round it to the nearest multiple of ten, and if you round one direction x units, round the other way x units. Multiply these two numbers, and add x^2.
by mdyrud
Thu Apr 22, 2010 2:29 pm UTC
Forum: Science
Topic: Getting killed by a meteor
Replies: 19
Views: 2269

Re: Getting killed by an meteor

Actually, Mythbusters tested the danger of a bullet falling. If it is still spiraling after being shot into the air, it has enough energy to injure or kill, but after it has lost its spin, it is not at all dangerous. I'm thinking that a rock falling from space would be even less aerodynamic, so a sm...
by mdyrud
Sat Mar 20, 2010 2:42 pm UTC
Forum: School
Topic: friends physics class
Replies: 7
Views: 1415

Re: friends physics class

It depends on how he is programming it into his calculator. I know for some classes that allow a cheat sheet, the teacher is fine with me writing the formulas down in my calculator (I'm not assuming they don't care, I asked them specifically). If he is using a Computer Algebra System, then yes, that...
by mdyrud
Thu Mar 18, 2010 7:44 pm UTC
Forum: Mathematics
Topic: Happy Pi Day!
Replies: 12
Views: 1596

Re: Happy Pi Day!

Wow, I thought my Pi Day themed birthday party was good (yes, I share a birthday with Einstein.) That is so awesome. It puts all of the Pi Day Carols we sang in school on Monday, Pi Day celebrated for our calc class, to shame.
by mdyrud
Mon Mar 15, 2010 10:25 pm UTC
Forum: Mathematics
Topic: Famous Math Quotes!
Replies: 32
Views: 6979

Re: Famous Math Quotes!

"Once you eliminate the impossible, whatever remains, however improbable, must be the truth," but I'm not sure if that exact wording appears anywhere. That is the wording I am most familiar with. It definitely applies to math and science. Like Einstein. The only way he could reconcile som...
by mdyrud
Mon Mar 01, 2010 8:26 pm UTC
Forum: Mathematics
Topic: Calculator Hacking
Replies: 8
Views: 2640

Re: Calculator Hacking

Yeah, it's pretty cool. I'm assuming that it is not good for the calculator's lifespan, or they probably would do that in the first place, but it speeds it up noticeably. If you have games on your calculator, you don't want to do that. It makes it rather difficult to do well.
by mdyrud
Mon Mar 01, 2010 8:23 pm UTC
Forum: Mathematics
Topic: slightly excessive numbers
Replies: 6
Views: 1299

Re: slightly excessive numbers

If you count the number itself, there would be no slightly defective numbers. I think that is what they were trying to get at.
by mdyrud
Mon Mar 01, 2010 4:06 am UTC
Forum: Mathematics
Topic: AMC 10/12
Replies: 30
Views: 4953

Re: AMC 10/12

I think over the past 4 years, I have gotten on average one question wrong every time because of an arithmetic error. It is depressing.
by mdyrud
Mon Mar 01, 2010 12:35 am UTC
Forum: Mathematics
Topic: AMC 10/12
Replies: 30
Views: 4953

Re: AMC 10/12

Yeah, it happens to me and one of my friends all the time. I really screw up on scaling things involving volume. I did that this year on the 12A test, and the answer I got was one of the ones they gave, so I got that wrong. My friend botched the frog and toad logic one, because he misread one section.
by mdyrud
Wed Feb 24, 2010 3:56 am UTC
Forum: Mathematics
Topic: AMC 10/12
Replies: 30
Views: 4953

Re: AMC 10/12

Nope, the AMC is a completely optional test. For the colleges I applied to, they had a space for your AMC scores, but it was not required at all. Taking them can only help you with colleges. If you do well, include it. Otherwise, don't worry about it.
by mdyrud
Mon Feb 22, 2010 8:27 pm UTC
Forum: School
Topic: Academic competion
Replies: 25
Views: 3569

Re: Academic competion

I am not sure what that means, so I am going to take a shot in the dark and say no. What does that entail?
by mdyrud
Mon Feb 22, 2010 3:45 pm UTC
Forum: School
Topic: Academic competion
Replies: 25
Views: 3569

Re: Academic competion

I'm in Knowledge Bowl, which is similar to Quizbowl. Our team is pretty good this year. We won a televised competition featuring teams from our area.
by mdyrud
Mon Feb 22, 2010 12:08 am UTC
Forum: Mathematics
Topic: AMC 10/12
Replies: 30
Views: 4953

Re: AMC 10/12

I'm talking the AMC 12, designed for Juniors and Seniors. The AMC 10 is for Freshman and Sophomores. The hardest questions on the AMC 10 are the exact same questions as the medium difficulty AMC 12 ones. If you are just a year or two ahead of most people, the AMC 10 shouldn't be too hard.
by mdyrud
Mon Feb 15, 2010 8:46 pm UTC
Forum: Mathematics
Topic: Minnesota Math League Problems
Replies: 15
Views: 4684

Re: Minnesota Math League Problems

Okay, they are all up through the 2007-2008 season. I don't have the two most recent seasons. Starting in 2003, there is a slight change in the format. All of the tests for one meet are combined in two files, one for problems and one for the solutions. They also added a Math Bowl to the State Tourna...
by mdyrud
Sun Feb 14, 2010 4:15 am UTC
Forum: Mathematics
Topic: AMC 10/12
Replies: 30
Views: 4953

Re: AMC 10/12

They do a terrific job of writing the test to show what skill level you are at. They start with simple questions, and increase the difficulty so smoothly you don't even realize when you hit the "I hate myself and want to die" difficulty.
by mdyrud
Fri Feb 12, 2010 10:28 pm UTC
Forum: Mathematics
Topic: AMC 10/12
Replies: 30
Views: 4953

Re: AMC 10/12

Nope, it is administered by high school's around the country, but I don't believe it is available online. Are you currently in a high school in the US? If you are, and will be next year, talk to a math teacher in your school, and see if they offer it. If they don't, bug the administration to do so n...
by mdyrud
Thu Feb 11, 2010 11:33 pm UTC
Forum: Mathematics
Topic: Minnesota Math League Problems
Replies: 15
Views: 4684

Re: Minnesota Math League Problems

Alright, thanks for all the help. I currently have two years of problems uploaded, and should have a big chunk up tomorrow. Here they are. Edit: I have put more up, so I figured I could fill you in on the way a season goes. There are 5 meets per year. Each meet has 4 individual test, and one team te...
by mdyrud
Thu Feb 11, 2010 8:48 pm UTC
Forum: Mathematics
Topic: Minnesota Math League Problems
Replies: 15
Views: 4684

Re: Minnesota Math League Problems

Okay, I am in the process of loading them onto Google Docs. How do I make it available to people? Or is that not possible to do without putting in their e-mail address?
by mdyrud
Thu Feb 11, 2010 8:09 pm UTC
Forum: Mathematics
Topic: AMC 10/12
Replies: 30
Views: 4953

Re: AMC 10/12

The testing period for the first administration is done, but when I went online, I found that there was another test date in February. I am sure that they use different questions, but the methods of solving the problems are probably similar, so we should probably wait until then to discuss it.
by mdyrud
Thu Feb 11, 2010 2:36 pm UTC
Forum: School
Topic: xkcd's effect on your appreciation of science/maths
Replies: 67
Views: 9166

Re: xkcd's effect on your appreciation of science/maths

I know exactly what you mean. I always drop negatives. I don't need a calculator to do math, but it certainly helps.

We are about six hours from the St. Paul area, so it is a little bit out of our range. Unfortunately.
by mdyrud
Thu Feb 11, 2010 3:45 am UTC
Forum: School
Topic: xkcd's effect on your appreciation of science/maths
Replies: 67
Views: 9166

Re: xkcd's effect on your appreciation of science/maths

No, I had not seen that forums, and I don't participate in many Saturday tournaments. We are a rather remote area, so we have one meet a week for a few months, and then the state tournament. It is our first year taking part in that televised competition, and that is only five rounds total, so we don...
by mdyrud
Wed Feb 10, 2010 7:55 pm UTC
Forum: School
Topic: xkcd's effect on your appreciation of science/maths
Replies: 67
Views: 9166

Re: xkcd's effect on your appreciation of science/maths

I am in Northern Minnesota. I am in High School Knowledge Bowl, and our team also competed on the High School Challenge, something a local TV station sponsors.
by mdyrud
Wed Feb 10, 2010 7:47 pm UTC
Forum: Mathematics
Topic: AMC 10/12
Replies: 30
Views: 4953

Re: AMC 10/12

This years was really hard. I've taken it for the past 4 years, and this was by far the worst. I looked over the answer packet today and compared it with my answers, and I scored a 79.5. That is a personal best, but I was still surprised by the difficulty. I feel sorry for the people in Minnesota Ma...
by mdyrud
Wed Feb 10, 2010 2:46 am UTC
Forum: Mathematics
Topic: AMC 10/12
Replies: 30
Views: 4953

Re: AMC 10/12

Have you taken the AMC's before? The solution packets are very in depth. They go through and demonstrate every solution. It is very helpful.
by mdyrud
Wed Feb 10, 2010 1:50 am UTC
Forum: Mathematics
Topic: AMC 10/12
Replies: 30
Views: 4953

Re: AMC 10/12

We are supposed to wait for the next day. You may just want to talk to the teacher in charge of running it at your school, as they should have an answer packet to show you starting tomorrow. They just want to make sure that nobody gets an unfair advantage. Edit: I don't know how they would feel abou...
by mdyrud
Tue Feb 09, 2010 10:54 pm UTC
Forum: Mathematics
Topic: Current state of math education
Replies: 23
Views: 2875

Re: Current state of math education

Just restating what has been said before, trig should not be its own class. I took it independent study, and I procrastinated until the very end. I had two weeks to do a full semesters worth of work, minus one test and two or three homework assignments. It was stressful, but I got it done, as well a...
by mdyrud
Tue Feb 09, 2010 10:26 pm UTC
Forum: Mathematics
Topic: AMC 10/12
Replies: 30
Views: 4953

Re: AMC 10/12

I took it, but we should probably wait to talk about it. You are not supposed to mention any specifics about the test until the next day.
by mdyrud
Tue Feb 09, 2010 3:31 pm UTC
Forum: School
Topic: xkcd's effect on your appreciation of science/maths
Replies: 67
Views: 9166

Re: xkcd's effect on your appreciation of science/maths

xkcd really pushed me towards devoting more time to math and sciences. This year, I placed second in our division for Math League, which would not have happened if not for that extra effort. I also got a question about the third amendment right on a televised quiz bowl style competition because of t...
by mdyrud
Thu Feb 04, 2010 8:51 pm UTC
Forum: Mathematics
Topic: Favorite math jokes
Replies: 1452
Views: 462990

Re: Favorite math jokes

That is exactly how my teacher explained it. The limit does not exist, but it doesn't exist in a specific way. It increases without bound, and putting infinity is simply a shorter method of indicating that.
by mdyrud
Thu Feb 04, 2010 8:44 pm UTC
Forum: Mathematics
Topic: Double Majoring Physics/Math
Replies: 23
Views: 6351

Re: Double Majoring Physics/Math

Thanks for the advice. I looked into it further, and I think I will plan on Double-Majoring Math and Math Ed and getting a minor in CompSci. That will still leave space for me to be in choir.

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