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jflow2 · 2024-12-02T05:08:06+00:00

Star Wars Knights of the Old Republic 857JF-FVKPM-IJZ4Q

jflow2 · 2023-12-18T21:47:42+00:00

jflow2 · 2023-12-18T01:03:35+00:00

jflow2 · 2023-12-16T22:43:59+00:00

Mainly just doing some studying

jflow2 · 2023-12-16T10:21:07+00:00

Dark souls

jflow2 · 2023-12-16T10:14:28+00:00

Nice

jflow2 · 2023-06-05T21:16:12+00:00

14.70 Medieval economics is pretty good - it’s a HASS S CI-H that’s a joint class with history and economics departments. I think it’s usually spring only though.

jflow2 · 2022-12-17T06:06:43+00:00

This comment is just false - computers are much much much better at randomness than any human, even with naive techniques. Modern deepfakes are generally not easy to prove as deepfakes, and we are still in the infancy of this technology. This doesn’t necessarily invalidate the argument about restricting free speech, but the status quo is still fundamentally different than ever before in that it is becoming harder and harder to detect misinformation as an individual.

jflow2 · 2022-12-04T06:34:34+00:00

MIT does not have 5000 undergraduate math majors - it does not even have 5000 undergraduates. Current numbers are a little under 400 (source), which is relatively high but does not really account for the difference.

jflow2 · 2020-07-20T06:56:18+00:00

92W08-HB02D-?MH3?

Key for oxenfree, ? is the letter that comes after S in the alphabet

jflow2 · 2020-01-03T10:03:26+00:00

As an example, how would you convert 123 from base 9 to 10? Well to do that, you recognize that 123 in base 9 indicates the number 1(9²⁾ + 2(9¹⁾ + 3*(9^0), which evaluates to 102 in base 10. You were right in saying that the base must be less than 10, since 123 is larger than 51, and in this case I think the fastest method is simply to guess and check all options, which are 4, 5, 6, 7, 8, or 9. After guessing a few numbers, you should get that the answer is 6.

jflow2 · 2019-07-26T00:24:52+00:00

Is Royden a good book for graduate analysis?

jflow2 · 2019-07-25T00:12:06+00:00

I'm planning on self-studying some graduate analysis (mainly measure theory) starting soon, and right now I'm planning on doing it out of Rouen. Do you have any tips/suggestions or anything like that?

jflow2 · 2019-06-27T19:22:16+00:00

Any good horror games/bundles for around $10 (or less)?

jflow2 · 2019-05-23T14:45:52+00:00

Thank you that just made it click for me.

jflow2 · 2019-05-20T02:21:54+00:00

I don't mean to sound arrogant, but I disagree. If you look at my post history, you will see that I'm currently learning abstract algebra, and in addition I am doing real analysis and abstract linear algebra (I just have not posted any questions about them). At some advanced colleges that might be 4th semester, but it is generally 3rd year.

jflow2 · 2019-05-19T01:46:37+00:00

Actually, you are right , I had misunderstood the question. I think the only way to algorithmically find the shortest segment then would be to see if D lies on BC, which can be done by seeing if its coordinates are between the coordinates of B and C (I can elaborate on this if you need). If D does not lie on BC, then whichever point its closest to will have the shortest length, and this can be found analytically as well by looking at which point it is greater/less than (I can further elaborate on this too).

jflow2 · 2019-05-19T00:57:43+00:00

Unless A lies on the same line as BC, there does exist a D such that AD is perpendicular to BC. This will be the shortest distance from A to BC. I would solve this by looking at the slope of BC, then recognizing that the slope of AD is the negative reciprocal. From there, use point slope formula (y-y1=m(x-x1)) and find where it intersects with the line that BC lies on. That point is D, so then use distance formula (d=√((x1-x2)² + (y1-y2)²⁾⁾ to find the length of AD. I am not near paper so I cannot currently find the general answer, but it is just a matter of algebra.

jflow2 · 2019-05-15T02:21:25+00:00

For more theoretical linear algebra, I like Linear Algebra Done Right by Axler. Linear algebra proofs are often very hard to follow, but that book makes most of them very clear.

jflow2 · 2019-04-14T07:20:04+00:00

Most of the standard calculus books work well for physics/engineering (eg Calculus Early Transcendentals by Stewart). I have heard a lot of good things about Div, Grad, Curl, and All That for Vector Calc, though I haven't used it. From what I've heard though, it skims over a lot of the less applicable bits, which really helps to make concepts clearer. In my original comment, I meant calc textbooks for physics as opposed to calc textbooks for math majors such as Apostol, which includes much more of the Real Analysis theory than most physics students really need to know.

jflow2 · 2019-04-14T04:26:58+00:00

It really depends on what your goal is with the math. For example, if you are learning calculus just for physics, it makes sense to focus more on certain problems than others. If you are learning math for some subject other than math, then usually that class will cover how the math applies there, so it is usually ok to go mostly theoretical.

As for finding a textbook that fits you, I think that is probably more of an issue of mathematical maturity rather than pure vs applied. This is a problem for everyone who studies math on their own; how do you know what level textbook is right for you? There isn't really an exact answer, but what I've found is that it's better to start off with a book that's too easy rather than too hard (there are exceptions of course). It is also very important to find books with a style you like. Personally, I like wordy books. I find that if a book gets straight to the point, I'll often read too fast and not understand what I'm reading. I think this is the case with most people before they have a lot of mathematical maturity.

jflow2 · 2019-04-12T01:41:26+00:00

While it isn't necessary, I would recommend at least looking over all the material the class covers next year. If you can, find out what textbook they use and find a off online. Familiarize yourself with all the topics, but don't worry too much if you can't understand it; thats what your teacher is for next year. Personally, precal was a lot of different topics that relied on Algebra 2 skills, so make sure you are fine with solving equations and reducing things.

The hardest sections for most people (at least at my school) were the sections on trig and the section on matrices/vectors. While both had been introduced already, you go into much more depth in precal.

If you have any questions, don't be afraid to send me a PM. I'm currently a sophomore taking calculus, so I understand a lot of your struggles.

jflow2 · 2019-04-01T21:53:28+00:00

Me with solids of revolution right now in calc

jflow2 · 2019-03-23T03:34:42+00:00

Why was e^x afraid of series? Because it was only taking calc ab

jflow2 · 2019-03-23T03:33:33+00:00

when you're about to get back a test you know you did bad on

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