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The Vector Dot Product

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We learned how to add and subtract vectors, and we learned how to multiply vectors by scalars, but how can we multiply two vectors together? There are two ways to do this, and one of them is called the dot product. Let's learn how to find the dot product of two vectors now!
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Опубликовано:

20 авг 2024

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Комментарии : 381

@zacharyhorvath52 4 года назад

There's a special place in heaven for people like you.

@Roger-99 4 года назад

true

@myman1373 4 года назад

Well he does look a bit like most representations of Jesus.

@kasugapepegon 4 года назад

he IS jesus

@tomatrix7525 4 года назад

Rainier Josephson lol

@enzoqueijao 3 года назад

@@kasugapepegon He's Jesus in more ways than one

@samwow6920 4 года назад

This is a better explanation than the one i'm paying at my college

@imthecoolest50 4 года назад

Same dude

@bankeyboi 3 года назад

same dude

@Th3Siam 3 года назад

college is a scam, as is uni

@xxdxma6700 3 года назад

Same

@d6853 3 года назад

@@Th3Siam / it’s not, you just weren’t smart enough to get into a good college or uni. Your loss

@painting_bhawya 2 года назад

One day before my exams... I was literally frustrated.... My whole vector syllabus wasn't completed.... This is the bestest lecture I've ever seen.... Very helpful I'm now ready for my exams... Thanks to you💜

@jonathanjenkins3609 6 месяцев назад

Same situation right now

@Esconde1111 5 месяцев назад

@@jonathanjenkins3609same situation now🤝

@frozenporcupine 4 года назад

This is the only place where I can finally understand this. Even books and lectures can't do this. Thanks, Professor.

@rocco6454 3 года назад

thank you math jesus

@bariscan9267 3 года назад

verbally clear, pedagogically excellent, you are a talented instructor!

@MomochiSama 2 года назад

no way man said pedagogically

@tink6225 Год назад

pedawhat

@mariaangelaabalos8273 3 года назад

Thank you so much... For making this concept easier for us to understand. The truth is normal teachers style of teaching is confusing and somewhat overwhelming because I notice that they introduce so many concepts that they don’t establish connections bet them so a big thanks to you sir for making this really simple for us🥺🥺🥺💕😭

@MelvilleG 3 года назад

I think a whole world of people molested by their giftless maths teachers at school and college gathered here to find relief and finally understand what the teachers were not able to explain. Thanks for bliss man. Amazing job.

@user-ju7hn2gv3y 8 месяцев назад

I'm grade 11 student, from ethiopia I like and understand your lesson ❤❤❤❤

@user-kg4lh3xs5s 4 месяца назад

Mee too I have got all in that lesson

@Tensho_C 3 года назад

this guide is absolutely perfect. I was lost in class for a week and this helped me catch up in less than 7 minutes

@ClumpypooCP 6 лет назад

Perfect timing! Im doing this in my physics class

@klopimindero3842 2 года назад

Im a VFX artist and ive only known how to input and output my functions to get result and now thanks to you im learning whats actually going on in my code.

@riveshraj2759 3 года назад

Wow this lecture is very simpler and zero time wasted. In less time this makes worthy use of time. Thank you ♥️♥️ From india

@rocks813 3 года назад

I understood the topic somehow when I read it from the book, but this video gave a more intuitive and clearer explanation! Awesome job, Professor, thank you so much.

@Elisha-phiri 10 месяцев назад

I have been watching your videos since 2015 and I still run back to this channel for better understanding of some concepts in math.Long live Prof

@HieuNguyen-so3et Год назад

Industry professional returning to school and having to refresh my memory on all these math concepts I learned 10 years ago. I can't thank you enough!

@natashakhama4414 2 дня назад

Your comprehension questions are really helping me to understand this better.

@AlEx-ro7kd 4 года назад

i got my uni exam in a week and you're my saviour

@stephaniehernandez7521 3 года назад

I am really thankful for people like you. You saved me from studying 8 pages of notes.

@VladimirEmelyanov 3 года назад

Perfect explanation Professor! It is very useful for me as a game developer! Thank you so much!

@alphanumeric6582 2 года назад

Thank you so much. You explained different formulas that my teacher explained in 43 minutes into just 7 minutes!

@kerahiajnobaptiste2744 5 лет назад

This is the BEST I swear. New subscriber.

@samovarmaker9673 5 лет назад

Math Jesus

@user-rq1ic2bz6n 4 года назад

Theres always that one guy in every vid that says "blabla jesus". Amen tho

@lasernikixcex 4 года назад

Amen

@nathan8472 3 года назад

lmao ... I thought you were going to say "math Guinness"

@aidansumner8364 3 года назад

Pretty sure he's Jewish too.

@Obamnaz 3 года назад

@@user-rq1ic2bz6n I love Jesus. He cured me from wanting to lust after women

@TheRojo387 Год назад

Btw Dave, I have cracked vector rotation, relying entirely on scalar and dot products. My solve can also be extended to higher dimensions, as I also standardise with the right-hand rule. I also note that you can find the angle by looking for one co-ordinate on a unit circle, and measure the area beneath it and add the triangle adjacent to it and with its opposite point at the origin, and multiply all by two, to get the answer in radians. But if degrees are your fancy, you gotta multiply instead by 90/π! Or…you could just use a protractor. Et voilà; no calculator needed!

@CrusaderGundam 4 года назад

thanks, taking quantum mechanics and wasn't paying attention to the plus sign during lecture. now things make more sense. Scalar Product is Dot Product to find a Scalar Value.

@ShivaniSharma-qp4sn 4 месяца назад

India : we studied this in school Foreigners: we studied this at college 😅

@your.helping.friend 3 месяца назад

Then what about icse

@ihavenoenemis 3 месяца назад

Don't think it matters anyway

@dzeremodemian Год назад

Can you imagine? Am learning this in just some few minutes 😯 Kudos sir👍

@devynboyle Месяц назад

There is no way I would have been able to get this far in school without RU-vid

@ilkinond 3 года назад

Ton of information in this short video - just the way I like 'em! Thanks!

@proskillz2337 10 месяцев назад

Literally watched this during lecture. Explained everything that professor couldn't in 2 hrs in just 6 mins.

@CalmmaJayeMusic 2 года назад

This is the beat math working out that I have every seen.

@RamonChiNangWong078 4 года назад

Thanks for the mathematical warmup This will be very helpful for the graphical/game dev stuff with C

@abdulaziz10071 4 года назад

4:30 lol😂

@ItCanAlwaysGetWorse Год назад

Wonderful explanation. Very clear and succinct. I would only add the 2d visual notion that "vector dot product" (of two vectors) is obtained by multiplying the length of either vector by the "projection" of one vector over the other (think of laying the angles vectors flat on a table, and having a lamp illuminating from "above". You would multiply the length of the vector laying flat by the length of the shadow of the companion.).

@urmilcontractor7485 Год назад

seriously man even a 2 year old can understand this thing . so clear crystal explaination love and prayers from india ❤

@RishiKtr_IITMandi 4 года назад

Thank you so much....I love that you teach without wasting any time....🥰🥰

@sharvind8852 3 года назад

Thank you very much prof Dave, your videos honestly help me to ace my classes.

@desodenis Год назад

first day of college and i couldnt understand a thing from my prof and here i am. i wasnt able to answer any of the questions he asked but now i realize it was such an easy subject

@tomsebastian2021 3 года назад

i was searching for 30 minutes last i find you my scientist

@patriciaseppeh9120 3 года назад

Wow this is the right person for me. Prof. You are the best

@akmaluddinsaid4104 2 года назад

Excellent video Prof Dave. Thank you

@mfa1193 4 года назад

The BEST answer i got from all of the videos I have watched.

@bnhamz5387 3 года назад

I just wanna say thank you I'm nigerian

@muhammadtalhafarooqui2503 3 года назад

first video and im already a fan

@cristianoRonaldolover360 3 года назад

best teaching method friendly

@ArghaHalder-yb7tx Год назад

Excellent teaching.❤️from India

@walsoncastro3156 10 месяцев назад

Everytime I see his face I can already hear "He knows a lot about a kinds of stuff. Professor. Dave. Explains." 😂❤😊

@user-vb8wb2pb4i 10 месяцев назад

The explanation is short but its a huge concept to grasp.

@morf5970 4 года назад

I FINALLY understood this topic thank you so much!!!

@avamcdonald4437 3 года назад

thanks dave. ur a king.

@emmanuelmicron1095 3 года назад

Why my calculator is giving me 4.1 instead of 4.108 ? Great video Mr Conversano.

@isonlynameleft 3 года назад

That was a GREAT explanation. I learned so much!

@askingwhy123 6 месяцев назад

Great video, thank you! Haven't done this since the 80s.

@liamcraft9844 4 года назад

I knew how to do this, but not why. Thanks for the lightbulb moment!

@i__stand__with__palestine__ 3 года назад

Thank u sir for ur video.... I'm now able to do it before anyone... even my teacher... thanks again 🤗

@user-cl5wn9fz7f 3 месяца назад

May your days be filled with happiness and pleasures

@nicholasachuz8329 2 года назад

I watched other videos before this one ,and trust me this is the best and the most comprehendable

@capocianni1043 3 месяца назад

thx bro, solved my questions in a mere one minute.

@THE-ANIME-NURD Год назад

I have been searching for so long for some details like this

@ethancharlton2907 2 месяца назад

Thank you, great quality and easy to follow!

@selvamd8861 2 года назад

Dev. I am impressed. Short and clear.

@lucidfangirl1030 3 года назад

thank you kind sir, online class isvery hard

@maleeshasamarakoon2247 Год назад

It's last night before the exam and then I found u... much luv❤

@abdimajiid5351 6 лет назад

extraordinary explanation thanks

@user-yc5cy6fw8d 2 года назад

Thank you professor dave

@eekitshere9506 4 месяца назад

was never taught this in school but need it now

@sharonekoni3267 6 месяцев назад

This lecture is superb.I enjoyed every bit of it . Thanks sir and more grace from God, for extraordinary intelligence .

@zarifchan 4 года назад

Thanks for the video, it's really helpful.

@josephlouisg.bondoc3612 3 года назад

thank you professor dave i love you

@memeingthroughenglish7221 Год назад

what a great video! I love to see where formulas come from before using them!

@Kooobf 3 года назад

Conversano !

@galinanilsson3376 5 месяцев назад

Very good explanation. Thanks and best wishes from Sweden 🇸🇪

@kusumkabir2188 4 года назад

You make it soo easey

@j8acob1 5 лет назад

Thank you! Very well explained

@tsegaynegash-dy4ev 14 дней назад

Nice clarification

@saymanlal 2 года назад

Love from India🇮🇳🇮🇳🇮🇳

@kjarceneaux8830 Год назад

Bless you sir. Studying for my high school math teaching cert and it’s gone from 0 to calculus in one chapter.

@BOOMBOOM-fx4xo 3 года назад

Thanks sir for removing my doubt.

@nex-gro4269 3 года назад

You are like Vincenzo in physics❤️❤️❤️

@sandunmunasinghe9469 3 года назад

thank you, professor. you are a great guy

@amalielende6409 5 месяцев назад

thanks king, saved my grade

@PanewsONE Год назад

that intro is awesome

@ryanben3988 Год назад

Thank you Professor...I am doing 3d graphics engineering and needed an explanation on why the guy in the video was using the .product over the lengths of a and b to determine if an angle was withing 90°

@dailyyakofmandarinchinese3363 4 года назад

Good stuff! Thank you so much!

@IronAceSUB Год назад

Thank you Dave! This is the first video of yours I've seen! It was very helpful and clear! I appreciate the work you did in making this video! Have a great week!

@wosomi 3 года назад

Bruh, he explained this so much better than my lecturer.

@Nedou24 2 года назад

I love this video! Just one question, how do I convert 1.46 rad into 84 degrees?

@AsgharAli-ni9oo 2 года назад

theres a formula for converting rad to degree and degree to radian radian to degree 180/pi degree to radian pi/180

@johannesscandley9910 Год назад

The best explanation.

@anikasmathmagic4105 3 года назад

At around 3:31 why did we have to take everything under a square root to find the length of |a| ?

@lafudge2929 3 года назад

I would try to give an explanation of how a double pythagorean theorem is used to obtain the length of a 3-dimensional vector, but without proper formatting and diagrams, I think that'd hurt more than it'd help. Instead, try reading this: mathinsight.org/vectors_cartesian_coordinates_2d_3d

@bnyaminsabah 6 месяцев назад

Well done it was very useful professor

@obsanhabtamu5620 Год назад

you made that easy for me professor i love your channel

@khikmatillosultonov2967 3 года назад

Very useful bro!!!

@piddlyballs818 2 года назад

Good stuff - breaks it down better than my uni professors

@bass_journey 2 года назад

Thanks. after checking several explanations, that finally made me understand.

@yennesseymarieprado2652 3 года назад

thank you so much professor dave!

@dennisdevink5667 11 месяцев назад

Clearest explanation ever 👍🙏

@styxoohhh 2 года назад

I thought that the dot product is always positive because the result is in absolute value, as written our module. Maybe there is just a problem in the publishing of our modules. Thank you for this video, all things are clarified. 💯

@carultch 2 года назад

The dot product is always a scalar, but it is not always positive. Dot product means multiply corresponding components, and add up the various results. If some of those components are negative, you very well could get a negative dot product.