Great idea, Ribose! I think I really have to do so-called 'remedial maths' ATP. Any specific recommendations there? :P My goal is to get to A) be able to write high-performance software for robowaifus, that utilize linear algebra, analytic geometry, trigonometry, and basic calculus -- all close to the metal in C++ (this is ofc, so our robowaifus can all live their day-to-day lives using nothing but a couple of inboard SBC potatoes). B) do so because I actually understand the problems well enough to devise the approaches on my own, pretty much. A man can dream, can't he!? :^)

>>28817 >I think I really have to do so-called 'remedial maths' ATP. Any specific recommendations there? Where exactly are you in math?

>>28818 To me remedial math means starting at algebra 1.

>>28818 >>28820 >Where exactly are you in math? Ehh, that's hard for me to pin down exactly. In the past, I've managed to create reasonably sophisticated & high-performance algorithms in C++ working professionally as a TD in the animation industries. These were based mostly on trig & linalg using the > pic-related techniques available to me at the time. I got props (and raises) b/c I actually managed to get them to work. OTOH, that was a few years ago, and I've been so focused on other things during the interim (robowaifu concerns not the least of which! :^) that I've forgotten most of the basic ideas I was using to solve things at the time. Even if I still had my code available from then (I don't) it would be a while of reading it before I began to understand again what I even did then. >tl;dr I feel like I probably need to go back to 2 + 2 = 5 :^) --- On the upside of all this, I'm likely a more capable and disciplined coder, at least. Cheers.

>>28821 Try this practice test and see how you do. Tell me which ones you miss if you miss any. https://www.studyguidezone.com/algebra-1.htm

>>28822 >miss, if any Lol Here's my score: 1: B. 48,000 wrong 2: ??? wrong 3: ??? wrong 4: C. -2 correct 5: ??? wrong 6: D. 3 wrong 7: C. 9 < x < 121 correct 8: ??? wrong 9: ??? wrong 10: ??? wrong

engineering isnt real though

>>28823 1. the answer is C. +20% from last year so 60000 = 120% of x or 1.2x 60000 = 1.2x divide both sides by 1.2 x=50000 2. x/3 = (2x+3)/7 first multiply both sides by 7 7x/3=(2x+3) multiply both sides by 3 7x=6x+9 Subtract 6x from both side x=9 E 3.3(2y+4)=8y Start by multiplying the (2y+4) by 3 6y+12=8y subtract 6y from both sides 12=2y divide by 2 y = 6 4. You only got half the answer right |x+5|=3 When you see |statement| that means they are asking for the absolute value of the statement meaning the non negative value of a number. So the absolute value of -1 or |-1| is 1 the absolute value of 1 or |1| is also one. |x+5|=3 x+5=3 and -3 x+5=3 Subtract 5 from both sides x=-2 x+5=-3 subtract 5 from both sides x=-8 So x = -8 and -2 E. 5.3x+8x+4x=6x+63 first add all the terms on the right side together 15x=6x+63 subtract 6x from both sides to combine like terms 9x=63 divide by 9 x=7 5x+23 plug in 7 for x 5(7)+23 35+23=58 D. 6. The reciprocal is just a number raised to the -1st power or you flip the fraction. So -3 = -3/1 and if you flip it you get -1/3 7. Good job 3<sqrt(x)<11 Square everthing 9<x<121 C. 8. C=3A B=A+2 (A+6) + (B+6) = C + 6 we know that brandon is 2 years older than andrew so (A+6) + ((A+2)+6) = C+6 We know Carol is 3 times older than andrew so (A+6)+((A+2)+6) = 3A+6 Combine like terms 2A+14 = 3A + 6 subtract 2A from both sides 14=A+6 Subtract 6 from both sides A=8 C=3(8)=24 So A is the correct answer 9. 3.25 for the first half mile and $.7 for each additional mile Cost = 3.25 + .7(Distance in miles-.5miles) 12=3.25 + .7(D-.5) 12=3.25+.7D-.35 Combine like terms 12=2.9-+.7D Subtract 2.9 from each side 9.1=.7D divide both side by .7 D=13miles 10.13-2(2x+1)=1 multiply everything in the parenthesis by -2 13-4x-2=1 Combine like terms 11-4x=1 subtract 11 from both sides -4x= -10 divide by -4 recall that a negative divided by a negative is a positive and a negative times a negative is also a positive x=10/4 simplify 10/4 to 5/2 x=5/2 D Any questions on how I got those answers?

>>28827 Lol. So it turns out I only got one right out of ten -- for basic algebra problems. :P >Any questions on how I got those answers? No, not really. I can follow along while you're spelling out the steps. But when faced with the question alone by itself -- and especially if it contains formulas -- my mind just blanks out how to even begin solving it. Thus my '???'s (ie, not even trying). And the one I got right wasn't because I was able to methodically work things out correctly, it was because I could just 'see' the relationship in my head. (And the same for the other two I actually answered [though incorrectly]. I thought I saw those relationships as well. The fourth was simply ignorance: I forgot what a reciprocal meant.) >tl;dr Right now, even basic algebra is too hard for me, it seems. --- What's strange is that I actually understand 'in my head' trigonometric relations like perspective, sin, cosine. Linear algebra operations like unit transforms across 4D timespaces, and matrix-vector operations. I understand geometric projection transformations across dimensions (say 3D->2D and vice-versa). And also why calculus concepts like derivatives and integration are vital for allowing our robowaifus to be able to successfully & efficiently navigate our apartments using just tiny little computers; based on the 3D point cloud data that they have collected, cleaned & normalized (and why all 3 preprocessing steps are important). I fully understand concepts like morph-targets & vertex sets (and how to use them properly in a 3D production environment). I can write software that successfully juggles different state machine states, and make the proper adjustments in a PID-like controller (and understand why it works). But I can't do even middle school maths. (And BTW, all the above are self-taught practical understandings of the concepts themselves, not because I ever worked out even a single one of these things mathematically on paper. I just applied the 'smol kot principle of engineering' mentioned above. The >tl;dr for this is, I think, that I begin to understand the problem only after I've solved it successfully in C++ [b/c I can see very concretely then how the system 'flows' to provide the solution, and what tweaks may be needed to do it correctly]. At this point, I've 'lather, rinse, repeat'd this type of process enough times to begin grasping some of the general maths concepts in a more abstract way by now. :^) Weird. >t. dropped out of high-school during the 9th grade. awarded a GED in one day after testing w/ no prior study, later on when i needed one for a job. >t. totally not Michael Faraday! :^) https://www.faraday.cam.ac.uk/about/michael-faraday/ >=== -prose edit -add hotlink

>>28822 Goodie goodie, 9/10 for me, I retained some of my elementary school knowledge.

>>28829 >I retained some of my elementary school knowledge. >elementay school LOL. Now I even feel worse! can't even do elementary school maths! :DD Congratz BTW, Anon. Do you think you'll be working on any robowaifus here with us soon? >=== -add query

>>28830 I'm the non-STEM poet guy, and also from Europe. European standards are a touch higher from what I'd heard, so you shouldn't really feel bad about it. It's more about the potential you have than what you currently can do, for me the potential probably ends somewhere around that exact level as in the test.

>>28831 Oh hi there, Poetry-anon. JK BTW, I'm fine. :^) I really liked your latest one as well -- you have quite a talent with words! Please do continue contributing your robowaifu-oriented works here. So, when we have some types of kits devised finally, do you think you could tackle turning our technicalese into something fit for human consumption by more-typical anons? Good instructions are going to be vital, after all! BTW, can you into arts? >=== -sp, minor edit

First rule about math. Mathfags like math. Second rule about math. Mathfags will rush to do the math so everyone else can import it.

>>28832 Maybe I could, it probably heavily depends on the content. What I rather hope for is for me to suddenly get the urge to "rebrand" and go for some real STEM degree which I would be capable of getting if I weren't a lazy piece of shit. Yeah, I also draw, did you want to "request" something in particular? You can look up my "art level" on the Nandroid booru, by searching for "topss", though there are only 3 of my works there. https://nandroid.booru.org/

>>28828 Start with pre-algebra then https://www.khanacademy.org/math/pre-algebra >>28829 algebra 2 for you https://www.khanacademy.org/math/algebra2

>>28835 >"The first rule of Math Club is: >you do not talk about Math Club." :^) >>28836 >it probably heavily depends on the content. Just kind of joking. I really just mean we'll need quality & consistent technical editing for the assembly/maintenance manuals. The assembly guide will be a smol book, not some flimsy 4-page foldout. >something in particular? I'd say basically the skills required to render technical schematics into simplified drawings for said book. Feel free to add all the cyoot Nans you'd like to the instructions!! :D >>28838 >Start with pre-algebra then Great, thanks for the advice Ribose! If I carve out the time this Summer, I'll probably do something autistic like literally writing a calculator to compute the answers for this course, so I can understand the problems better, w/ posting capps & codes ITT. You can grade the results, so I can figure out how to make the code do the right thing. Agreeable? >=== -prose edit

>>28847 >You can grade the results, so I can figure out how to make the code do the right thing. Agreeable? Sounds good to me.

>>28877 OK then. I'd already gotten the basic arithmetical calculator framework done this past Spring, based directly on Bjarne Stroustrup's excellent Formal Language Grammars developmental example from his college textbook PPP2, chs 6 - 7: (>>21307) https://coliru.stacked-crooked.com/a/213a22dd10a6f316 I can just work on extending this basic tool until it's closer in spirit to a true Computer Algebra System (CAS), which has been a personal goal anyway, since I've always wanted our Model A robowaifus to be able to do maths for anons! Not the least of which target-anon goal was me eheh. :^) >=== -minor edit

>>28885 (2 + 2) + (5 - 2*(5/2)) = 5

>>28886 Lol. >"Let's use the thinking chair! I sit down and pull out my handy dandy notebook, and work out anon's problem!'' :D https://coliru.stacked-crooked.com/a/f5c0e5c5dfb52dab

I'm going to make this offer again and since I am taking on students IRL I will probably post those problems here as well. I do math up to calc 2 and a little bit of differential equations.

>>40226 Great! I'm still willing to make time to try and give our robowaifus the ability to perform maths for us on the fly. I'd probably need to talk through ideas about how to work through the mechanics of doing these maths in code. I suppose that means you'd need to be able to read the code itself to spot where I'm making mistakes? Here are the codes so far if you're interested in adding such a capability for all our waifus, Ribose. (cf. >>21307, ...) https://rentry.org/PPP2_Calculator_h https://rentry.org/PPP2_Calculator_cpp https://rentry.org/PPP2_calc_util_h https://rentry.org/PPP2_calc_util_cpp <---> I'm guessing we could both make a similar tutoring offer, one to the other if you decided so. Cheers, Anon. :^)

>>40231 I can do a little python (i have a cert), I took a c++ class in uni (tbh I forgot most of it but could relearn), I also know a little Matlab and Visio Basic.

>>40231 OK to so do what you want to do I think I need to brush up a bit on linear algebra. Let me watch a couple of videos and get back to you. Give me some basic syntax for C++ in return.

>>40233 >>40234 Sounds good! May we both have good success here! Cheers. :^)

A big maths breakthrough just occurred. If we can implement this in C++ for our robowaifu's path-planning software, it will allow it to run faster on ever-smaller hardware: https://trashchan.xyz/robowaifu/thread/26.html#1237

>>40235 >>40279 https://m.youtube.com/watch?v=fNk_zzaMoSs&pp=ygUWbGluZWFyIGFsZ2VicmEgdmVjdG9ycw%3D%3D

>>40287 Neat! Thanks, Ribose. :^) So, you mentioned >"Give me some basic syntax for C++ in return." ( >>40234 ) I'm not sure exactly what you're needing/wanting here tbh. Code examples, video tutorials, websites? I've provided thousands of lines of my own handwritten C++ code here on /robowaifu/ , and thousands more by others (or at least based on, as with Bjarne Stroustrup's work). Can you elucidate for me, Anon? Cheers. :^)

Basis vectors & components comprise tensors? https://www.youtube.com/watch?v=f5liqUk0ZTw Visualizing tensors using simple 3D graphics. https://www.youtube.com/playlist?list=PL2aHrV9pFqNTEMuDFre16Wx2SwBCNiR7j

I would like to turn this into a general tutoring thread. I can tutor biology, chemistry, and a little bit of physics and material science for those interested.

>>40375 Neat! I'm personally interested in all those fields (and many others), I hope others might be too. Cheers, Anon. :^) --- P.S. Any ideas yet how I can help you, help us to make a robowaifu maths calculator together? (cf. >>40314 )

>>40396 Oh I no longer use discord do to ethical and privacy concerns. My new contact is [email protected] its a cock.li account.

>>40400 OK, updated. Anything else you want to change anywhere just let us know! Cheers. :^)