I can't even do fractions I need to learn the basics all that way up to advanced trig in less then 4 months help.
Edit: Damn guys, I didn't expect such so many helpful responses. Thank you :meow-hug:
Khan academy helped me refresh on calculus before this semester. It's really easy to understand and use.
khan academy is amazing. Dude carried me through both orgos and it’s now my favorite subject.
Watch a Khan academy video on fractions until it makes sense intuitively. If you need to go all the way back to like a kids video, do it. You can only develop math skills by getting an intuition from the bottom. Fractions are one of the more important things you need to figure out. That's a lot of ground to cover in a short amount of time, you'll probably need to spend a lot of hours regularly to go from one end to the other in four months. If you can't do it that quickly, try not to let it bog you down, that's a ton of content for anyone to undertake.
This was me back in highschool lmao I had to go from a middle school understanding of math to hard af integration/differentiation problems in less than 1 year.
Massive bump to Khan Academy for all other reasons ppl have outlined in the thread, miles better and more enriching than any shitty college zoom lecture by far. The math channel "PatrickJMT" is also an excellent resource.
DM me if you want the pdf textbook I used in highschool, its kinda cringe but has tons of practice problems with solutions, and covers stuff from basic quadratic equations to advanced calculus and trigonometry. I'd seriously recommend it for the trig stuff alone.
Also there's this cool textbook that covers the basics really well entitled the "No Bullshit Guide to Math and Physics", you can get it from the usual totally legal sites like z-lib and libgen.is
Do not forget to do some math exercises instead of watching lectures alone. Learning by practice is a lot more effective than just reading and listening.
I'd argue it's the only way to learn math. Seeing a formula or a concept means nothing until you've done the work.
Trig’s probably also different in programming computers and other shit but I never learned that
You have a position (x, y) and want to know where a new position a certain angle and distance from it is.
newX = x + distance * cos(angle)
newY = y + distance * sin(angle)
Now you want to know the angle from (x, y) to (newX, newY)
angle = atan2(newY - y, newX - x)
If you don't have atan2, you curse the name of whoever designed this programming language, then go copy it from anywhere else, because regular atan is very silly.
This is all the trig you will ever need to do any computer programming that involves trig. Even if you get super deep into geometry stuff, you'll switch to vector math instead.
trig is also important in computer graphics. Like for vector rotations, building projection matrices etc
The version I got had a racist little story attached and everything.
I'll second Khan Academy.
Just to elaborate a bit: Khan Academy has math courses for anything from extremely basic math (e.g. counting) up to about halfway through 2nd-year university (e.g. differential equations, linear algebra). Along the way, it goes through high school math, including trigonometry. They're sort of arranged in the order you'd normally learn them in school, so the "Trigonometry" section comes after the stuff you'd need to know to understand trigonometry and you can review anything you're rusty on.
Here's a list of all of Khan Academy's math courses. I'm not sure where you are now, but if you're having trouble with fractions, it might be a good idea to start somewhere around the "Arithmetic" section, which includes some videos on fractions. But also check out some of the videos in the section below, including the Trigonometry section, just to get a sense of what they're like.
Other comrades have got you covered on the resources, but just a heads up to say if you're ever stuck on something send me a message and I'll help as best as I can, I did a lot of maths during my uni and postgrad courses so hopefully I'll be slightly better than totally useless, but I am still a complete moron. Good luck comrade!
:stalin-heart:
I never really dealt with your situation (self-learning a pretty good chunk of math), but feel free to ping/dm me if you need a hand understanding something (I used to teach math and miss doing it). So I don’t have specific references, just a broad outline of what to look for/the order
I’d probably start with what the US calls algebra I / II in high school, but I dunno what it’d be called in college; I taught a version called “intermediate algebra” but there’s not a ton of standardization among what colleges call “pre-college” level math courses. “College Algebra” is a fairly popular name that I think is roughly equivalent to (but a bit more challenging/beyond imo) Algebra II
You’ll have to backfill a bit (when stuff with fractions throws you for a loop, for example; watch just a few videos or whatever on that specific topic and do 5-10 problems from a textbook to reinforce it). I just want to emphasize doing (and checking) problems constantly to reinforce it. Move on when you feel good and can do a couple in a row, given the time pressure.
After Algebra I/II you should be able to go for trig. Precalculus courses are often half trig, after a small amount of a continuation of algebra II/College Algebra stuff
I could probably write a pretty exhaustive bulleted list of the most important topics/techniques traditionally covered before trig if it would help
Yeah khan academy is good. It'd be really nice to have a homework help community on here. DM me if you need some extra explanations or something, I've done some math tutoring in the past, I won't say I'm good at it though.
if you end up getting to the advanced end of things, back in uni I used to watch a channel called patrickjmt on youtube.
it's probably gone or old as hell, but if it's still up it was a great help
holy shit he's still going, and he's even doing fluid dynamics.
that probably would have helped when i was dropping out of engineering 10 years ago lmao
This is a very, very good channel https://youtube.com/playlist?list=PLDesaqWTN6ETc1ZwHWijCBcZ2gOvS2tTN
