Miscellaneous News

supercat said:

This is a really lazy argument: if you don't want to do something, just claim that doing it is playing China's book.


My personal opinion is that linear algebra is not that hard once you understand the concept of vector.

Today's fine example of modern Western value - health and fitness edition:

https://twitter.com/i/web/status/1612555966347870208

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. That's the book used for graduate level mathematical physics class. But I think that's OK since most people forget most of what they learn, you typically learn more than you need to so that when you forget most of it, you'll degrade down to the level you'll need.

If you finish trigonometry, you'll only remember simple algebra. Like most high school graduates.

If you finish calculus, you'll know mostly trig and more complex algebra. Like most BS graduates.

If you finish the bullshit I did, you'll know basic calculus very well at least.

I also think that I only learned computation and derivation, not real math. Real math is proofs based.

solarz said:

I had no trouble with linear algebra, but I can't integrate for the life of me. I had no problem with math until I came to that part.

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integration in 1D is pretty easy, its just the accumulated and signed area under the curve of a given function between 2 limits in a definite integral, and which happens to be the antiderivative for an indefinite integral.

for positive functions, you can understand it as simply the accumulated area under the curve, and this visual definition is actually very useful for computing real world accumulations given rate data, that do not actually have functions.

solarz said:

I had no trouble with linear algebra, but I can't integrate for the life of me. I had no problem with math until I came to that part.

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Surely you can memorize some of the more common forms like how 2X integrates to X^2 or e^x integrates to itself. Rest of it is just combinations really.

FairAndUnbiased said:

integration in 1D is pretty easy, its just the accumulated and signed area under the curve of a given function between 2 limits in a definite integral, and which happens to be the antiderivative for an indefinite integral.

for positive functions, you can understand it as simply the accumulated area under the curve, and this visual definition is actually very useful for computing real world accumulations given rate data, that do not actually have functions.

Click to expand...

I'm reading this and my eyes just glazed over lol. This is why I didn't go into physics.

siegecrossbow said:

Surely you can memorize some of the more common forms like how 2X integrates to X^2 or e^x integrates to itself. Rest of it is just combinations really.

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It's been way too long for me to remember details, but I don't think it was the common forms that was giving me trouble lol.

GZDRefugee said:

Math teaches problem solving, critical thinking, and provides a foundation for logical analysis—everything a scientifically oriented society should focus on. While not everybody should go into abstract math, there are great benefits to have a foundational mastery of mathematics.

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Also math is kinda fun when you get the gist of it. Main problem is that teachers and lecturers are not always the best in actually teaching and once that happens it gets bland with no further intrinsic motivation.

solarz said:

I had no trouble with linear algebra, but I can't integrate for the life of me. I had no problem with math until I came to that part.

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I took a computer graphic course in my fourth year. 3D graphic is all vectors and matrixes.

FairAndUnbiased said:

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. That's the book used for graduate level mathematical physics class. But I think that's OK since most people forget most of what they learn, you typically learn more than you need to so that when you forget most of it, you'll degrade down to the level you'll need.

If you finish trigonometry, you'll only remember simple algebra. Like most high school graduates.

If you finish calculus, you'll know mostly trig and more complex algebra. Like most BS graduates.

If you finish the bullshit I did, you'll know basic calculus very well at least.

I also think that I only learned computation and derivation, not real math. Real math is proofs based.

Click to expand...

True, real math studies are on another level, as a engineering bachelor they just told us, solve ODE, find eigenvectors of this, blah blah, never proven even one thing.

solarz said:

I had no trouble with linear algebra, but I can't integrate for the life of me. I had no problem with math until I came to that part.

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Almost all the mathematical calculations for Machine Learning is Linear Algebra, so is Quantum computing with probabilistic vectors.
So if you wanna switch career at some point, this is worth considering, fam.

Justin Trudeau after lambasting then PM Stephen Harper of the Conservative Party on trying to purchase 16 F-35 back in 2010 for $9 Billion with an expected delivery date in 2016. But back then, Justin Trudeau said this about then Conservative government: “The Conservative government never actually justified or explained why they felt Canada needed a fifth-generation fighter,” Trudeau said in 2015.

But this time around the F-35 is a more mature product and you see, according to the Liberal government Defense Minister the purchase of 88 F-35 A with an estimated total costs of $70 Billion will inject 3,200 jobs and will bring $425 MILLION back into the Canadian economy. But how come this purchase makes economic contribution to the Canadian economy at higher costs, but the prior government intended purchase price of 65 F-35 for $9 Billion economic benefit was non-existent?

If the Conservative Government only had China to be used as their bogeyman, then they too could have made their intended purchase happen. Alas, they just happened to have govern Canada at the wrong time.