Explicit and recursive definitions of sequences | Precalculus | Khan Academy

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[@bobchlarson788]

Shoutout to all the other people failing math who came here to try to get help and got more confused

[@cubeheads4everxtreme638]

same and thanks for the shoutout

[@at-xh1yv]

i came here since my teacher is too lazy to teach & tells us to come here :-)

[@dontplay2912]

Bob Chlarson I’m not failing xd😂. Just needed clarification bc I’m taking algebra in 7th grade.

[@bethegreatest4976]

SOCCER IS LIFE

[@ethanisnothere1375]

Lol that means me

[@Jaguar404x]

I just spent two days in class trying to learn recursive sequences and I didn't understand it but somehow this guy on the internet taught me it in less than 10 minutes. HOW. IS. HE. THIS. GOOD. AT. TEACHING.

[@shayaan7584]

HE. USES. BLACK. MAGICCCCCCCC!!!!!

[@shayaan7584]

JK

[@tannerq8900]

Cause now your paying attention.

[@Cgg222]

He is Saul Goodman

[@-clipz-]

Prayers turn to God may everyone everywhere be blessed and healed and protected in Jesus name amen

[@yougotnoyams7325]

And then satan said: " put the alphabet in math!"

[@at-xh1yv]

i love your profile photo rapmon

[@iwant8907]

I thought that was Yoongi

[@jamsforsale6767]

@@iwant8907 Then who is it?

[@janicegrailmer912]

this made me laugh so hard

[@Sintrell1381]

Wow😭😭

[@chocolatetwixbarnow4983]

Wait, this is precalculus? I'm learning this in Algebra I. Wtf.

[@salmah725]

Chocolate & Twix Bar Now precalc is the same as algb 1 Lmfaoo

[@marlyl1957]

you mustve been in an honors class lol

[@olamidefagbewesa870]

Same

[@quintonreese5880]

SAME i have this is algebra 1 honors btw im a freshman

[@ramelango3882]

I take this for algebra 1 too lol I’m in an honors class as well I’m in 8th grade

[@THESOGGYSPONGE]

My brain just imploded

[@holylarcenist9596]

at least it didn't EXplode

[@edh2688]

+Crispy Bear Boooo lol

[@holylarcenist9596]

+Ed H I try

[@imagination7710]

Did you tell the doctor? Im sure he has a pill for that

[@THESOGGYSPONGE]

He did

[@ranic993]

I am now more confused

[@JuicedUpGolf]

i agree

[@deaduserrr6348]

Dan Talks you are VERY wrong

[@bethegreatest4976]

SAME!!! 2019!

[@user-zf8gy1yw1p]

stfu noob

[@TheBancho22]

"You can find every other term in terms of the term before it." :D nice

[@at-xh1yv]

i came here since my teacher is too lazy to teach & tells us to come here :-) no one? ok

[@derrickseo503]

hello lol

[@lovi9258]

samee

[@SequinBrain]

This increasingly disgusting, bad habit teachers have wasn't a thing in the 70s or 80s, since the iNet was in its infant stages. I'm trying to get more oversight on bad teachers and how to remove them, but evidently, this process is also in its infant stages or doesn't exist at all.

[@mavericklucas594]

Thanks, I was struggling to understand this on my homework and this helped a lot.

[@pbates1693]

Anyone here cause school got shut down

[@dirtydozenzclash7333]

I understand recursive quite well and I must say that this made no fucking sense.

[@jamiejamie9262]

Im saying !!

[@vlogsbyrow]

Well then you didn't understand it well enough.

[@elliptix9344]

OMG now I understand THANK YOU SO MUCH I emailed my teacher so THANK YOU I DON'T NEED HER HELP ANYMORE :)))))

[@user-sx1up5oh2d]

Thank you this really helps, I am currently taking a math class right now and the teacher doesn’t even take notes and he is very uncommunicative, so it is hard to figure out how to do the math, but everyone else in the class gets it

[@firebthegod4669]

wait arent u supposed to take notes not the teacher?..

[@Everito_TheBurrito]

I think you might have my teacher

[@joylox]

You need to do a video on solving these, and/or a discrete math series! It gets a bit confusing to solve. My last assignment was proving the Fibonacci sequence, which is cool, but a little challenging.

[@RIMPND]

5:28 The most racist quote on khan academy...

[@pyramixmaster7905]

Why so NOOB!? lol

[@joec4505]

LMAO

[@thetientran]

Why so NOOB!? F

[@daltonbrown5482]

LMAOO brown is not an attractive color

[@bargouise]

Rip

[@jessicaledwick899]

Thank you! It was quite a search to find a youtube video that tells the difference between recursive and explicit.

[@specter1001]

This is a supremely helpful video. thank you!

[@sonofjesus1464]

I found how to do this. Lol God bless :D

[@aesthetic_animes9331]

Thank you so much! This really helped! The way we do it we substituted k to n so it kinda confused me a little but now I got it!

[@ditrixgenesis781]

I'm here for my Math 232 class, but that last little statement applies to more than just math (for myself, Comp Sci 250). Explicit code is very direct, but will take forever (hyperbolically) if the correct problem comes up, so the solution is to use a recursive code with a beginning term. Cool

[@tannerq8900]

Thanks, my teach went over this in 20 minutes, that may seem like a good amount of time, but do that, with only 3 problems, and him not fully explaining how it is done, or what explicit, and recursive equations are! (Don't get me wrong he's a great math teacher, but he needs to explain a few things more. Instead if hinting at what something is.)

[@ashleyb7887]

this man saves my life every time

[@rachelpark3295]

You make this so easy Thank you!

[@edgarperez8949]

thanks for this explanation! the textbook I'm reading was not clear on the recursive definition!

[@gabrielgazeti5883]

2+2 is 4 -1 thats 3 quick maths

[@ditrixgenesis781]

Quick mafs

[@cookiesandrainbows3322]

Everyday man is on the block

[@jamsforsale6767]

Smoke trees

[@josephrankin3843]

see your girl in the park

[@charmingcurls7401]

Thank you so much! Helped me so much!!

[@victort.4798]

POV: it’s 5am on a Sunday during covid virtual school and you’re cramming for a cumulative precalc exam due at the end of the day :)

[@mastergamer4928]

Precalc exam? I'm doing this in algebra 1

[@CaMaa456]

this did not help

[@AngeRKang]

failing math during quarantine squad?

[@firebthegod4669]

biig yeeees

[@ericawu8779]

"This is not an attractive color" lmao 😂

[@Seth-pf4bo]

I thank you for getting me through middle school

[@tanyonderrick168]

I understand how to do recursive just fine. and this was very different. I just wanted to know how to make an explicit function

[@sandwich8240]

Me, when I have a quiz on this tomorrow and still don't know absolutely anything

[@ZeqiG]

Have been doing this topic at college. We call them deductive and inductive definitions though rather than explicit and recursive :)

[@SaraphL]

Link to respective playlist on khanacademy website, please!

[@theblackk-night3334]

I started my test yesterday and I'm now watching this before school the next day so I can pass it

[@nbshftr]

1:07 downhill from here

[@gracenoel373]

He makes this sound way too complicated.

[@yateeth10]

This is gonna help me on my test Tomorrow because I don’t pay attention in class

[@RONOVLOGZ]

Very helpful thank uou

[@jenlin6913]

Thank you so much!

[@iamnottweezy]

i got a 47% on my test so now Imma retake it and actually study

[@barry2855]

love this guy

[@hannahellkitty]

What if you don't have your first term or difference but you have the number of terms?

[@alexy.9306]

Feels good to know 900k + come here to study with me :)

[@keela7324]

Can you help me w/ this? My question is find the explicit formula of 4,8,12,16,20

[@pbates1693]

OwU no

[@MehkaiManzano]

omg thank you so much, I understand

[@citrusgem]

khan academy my beloved

[@colinwhitlock5148]

Why isn't there a single video on KZbin of someone doing a quadratic version of this?

[@tar0286]

well i understood.

[@victorstorm2880]

so you shows ak-1, but what if the formula says ak+1, what does that mean? the next term? if its recursive how can u being going off of the next term?

[@user-ip9fp8ug5y]

Question: is there always a -1 in the (k-1) part or what?

[@95MarioKaci95]

What book are u using??? can someone tell me?

[@dontplay2912]

U saved my life

[@danielmcdonald3642]

thank you!

[@geraldaynyabyabin4289]

(k-1) what is the use of -1?

[@hoodiefreak9206]

I have a test on this today. We’ve been learning this since Monday and I still don’t understand

[@Trippie-cn8ot]

YESS, we love just still not getting it

[@00777_]

I have a math test today and I failed the practice test. Please help Edit: I failed 🧍‍♀️

[@nomsai5663]

LMAO

[@HereForTheComments]

What happens now? Is there still hope for your mathematics journey?

[@00777_]

@@HereForTheComments school’s out 😎

[@HereForTheComments]

@@00777_ Did you pass the grade?

[@00777_]

@@HereForTheComments yep I did well on all the other test this one just messed me

[@aalokhardikar8342]

Thank you

[@imagination7710]

Could I not say for the second one; 3k + (k-1)?

[@trippinthecreator3148]

I don't know if it will help anyone, but learned it as F(n) and not A(k). Should't make a difference, but it's a bit confusing at first.

[@xiomara8610]

Thank you, i was genuinely very confused on where A(k) came in my homework.

[@parkjena1923]

thank you! you just answered what i was looking for :D

[@shams...2417]

Thanks 😊

[@MarySilva-id1xe]

Ok so the explicit for me looks like f(n)=-6+5n and recursive was an=an-1+5 soooooo I'm hecka confused here and I have math first hour and I've been studying all weekend. And I was supposed to be celebrating my late bday today and ended up studying for my 5 FINALS TOMORROW....love that

[@nomsai5663]

The way there’s 1M views but only 2K likes, just shows how many times ppl had to re-watch it 😭

[@diana-wu8cc]

i’m still kinda confused. why are we minus-ning 1?

[@josephmurillo3689]

This made it harder and made me confused

[@elliptix9344]

Okay. What I learned was An=An-1+d but the 1 is tiny it's the size of the n

[@rayankhan3858]

Same

[@543vantankhang5]

My mind is explode right now , but it's okay . I'll rewatch until i understand it .

[@thomaslandrey5691]

This video is algebra 1 not precac so that's why you guys are confused. Its off topic

[@basedandbananapilled2677]

Advanced Algebra, is when the formulas are learned

[@elliptix9344]

I'm in pre algebra and we are learning this and I understand it now

[@SequinBrain]

It actually is precalc since it comes up again in Cal 2.

[@fatguy7923]

yeah i’m in algebra 1 rn

[@g-romeroflaviankaromero6335]

Can you make a video on how to be good at math because my brain just don't agree with Math because its hard tnx.

[@kazuohiroshi3923]

thx man

[@Sintrell1381]

Can anyone tell how is this finna keep me living or help in life

[@parkjena1923]

no, no one can cause it cant 😭

[@yuan3023]

Bruh i slept on my online class in math and i have a test later and watching this now

[@jhunepaullawagon5152]

Sir my given is this F(n)=8m-5 can you solve this

[@poptarts1455]

Is previous term always -1???

[@euniceruta3260]

I kinda understand it but how to get the next term when the differences are not the same?

[@GraceandBeth]

haha i’m a year late but if they’re not the same then it’s not a arithmetic formula

[@galacticpopcorn9981]

5:43 AERITH

[@AntagonistAndy]

That's crazy who here cause of corona?

[@thedark3ststar]

had to turn in a test today with literally nothinf kn the first page cus i cant do thus yet 😭

[@akshayappan6526]

Why does he put a (k-1) after the three? Please answer.

[@sonofjesus1464]

+rusko dudesko no. Just no

[@anilafariab]

Do you guys have any tips for raising your math grade?

[@elliptix9344]

Not really my grade rn is a 75 barley passing so just do your homework and sit next to the teacher in class like I do so you can be sure to hear what they say

[@iwant8907]

I hate math but I love his videos

[@silviabronder3337]

why cant I get this?

[@kennedysaniah]

He sounds like Young Don the sauce God

[@FeedMyBalls]

5:27 based

[@MacJunkyFlips]

what. this is nothing like in school. now i cant do anything while im sick

[@seagull8758]

Put it in double playback speed and you can learn everything about math in like 2 days

[@malloryscinematography7021]

I gotta test Tommarow and I’m not consuming any of this information

[@gumbosunrise1825]

Ay thanks for the help but pretty sure i still bombed the test

[@uyenchang9062]

what is it mean "one less than the term we add"..?

[@ellieb8627]

To find the mean you add all the terms together and then divide by the number of terms

[@kyrajohnson3029]

Ok so I like how you worked but we're learning recursive a little bit differently. I'm totally lost with the recursive equation and I think I get your way but trying to turn your way into ours is giving me some difficulties.

[@sonofjesus1464]

or ours into his way. He needs to work it the normal way :(

[@sonofjesus1464]

+rusko dudesko And I major in Tardiness

[@shosnow6824]

+Son Of Jesus Mom

[@notMysticz]

shout out for the 8th graders at BASIS wallowing in regret

[@TheMacbebe101]

Lol what?

[@anthonymarlow2269]

You have a high IQ

[@doretheadillings8007]

Wha .. ? WHAAA ??

[@Boss_Cheese]

Where did they (k-1) come from 😭

[@bkboi4376]

confused. My math teacher is nice, but his teaching was no good for this. Please help. I have been studying for a week with no progress

[@somewhiteguy1945]

hold up, this is pre-calucus?? Im learning this is algebra...

[@hellol2012]

Same :/

[@daniellelaraze7135]

Thank you. I understand it now. But I have a question. I can't get the recursive formula of 5, -10, 15, -20, 25. I have tried this several times to get this formula. Can you help me?

[@daniellelaraze7135]

No, its alright :) I already know it :)

[@erichuang5971]

{asub1=5 {asubn=asubn-1-5

[@saiharinathnerella501]

Your so dumb that's easy

[@doveu]

@@saiharinathnerella501 you're*

[@dontplay2912]

-2(n-1)

[@anthonysanchez8669]

His voice though