Arithmetic Sequence Introduction

I introduce the concept of Arithmetic Sequences and work through some examples.

For all my lessons so far on Sequences and Series go here:)

[tgc]

You make me want to be a math teacher Mr. Tarrou. Your enthusiasm doesn't just make me want to do math, but it also brightens up my day!

[VEKAproductions]

Hi. I watched your videos on sequences (arithmetic + geometric + sigmas), and I got an A on my test, something I've been struggling to get all year (I haven't gotten an A in a WHILE (in precalc)!!! It was a big deal). Thank you very much. I plan to watch more of your videos before I take my final exam. You teach very well.

[Impuhlz]

you are awesome, your videos not only teach me plenty, but also make me smile. you are a youtube great.

[georgesadler]

Professor RobBob, once again this is an awesome video/lecture on the Introduction to Arithmetic Sequence. All students should recognize the pattern with the given information.

[ArpeggiatedChopin]

As always, another superb video detailing a quick explanation of the topic. I love to come home after class and watch your videos to reinforce the lecture before I start my homework. Please keep up the fantastic work, I don't know what I'd do without this channel, thank you so much! 

[arthurxafis]

This is legitimately the best video on YouTube.

[MrHimura]

All ur Tutorial Videos (Algebra 1&2, Calculus 1&2) are Creditable Master Piece of Work!!!
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[profrobbob]

nCr is for finding the number of ways you can have r successes from n trials. So if you wanted to find out how many ways (Combinations) you could have 4 successes out of 10 trials....10nCr4 which equals 210. If you want to find out how many pizzas you can make from 3 types of cheeses and 4 meat topping, assuming you must choose one of each...you just do 3 x 4 = 12

[profrobbob]

I used the variable k as my index variable in my sigma notation. I could have used n or any other variable for that matter...but I used k so that needs to be consistent through the sigma notation.

[profrobbob]

Just remember where you found me and I can be your YouTube teacher whenever you need extra help! Thanks for watching:)

[MsWillybert]

Why aren't you my teacher? You make everything so simple! Thank you for the help!

[VishalGaud]

great work !!
i wish i had a teacher like you from the well at least now i can learn at my own pace from your videos :)
Thanks a lot

[skipperfromppd]

I am studying for midterms in my Algebra 1 class and we have learned these two formulas as Recursive, and Explicit. Are there any major differences (ones that will change the answer) between Explicit (which is how you described it) and General formulas? Thanks for the amazing videos, i always come to your channel when I have study issues :)

[profrobbob]

Thanks!
And thank you for liking my videos...now it will be like having your own personal tutor:) I hope you enjoy learning math from Tarrou's Chalk Talk, and if so, please be sure to share my channel info with others:D

[foobeebs]

You are awesome! Thank you so much for making these videos. :D

[gamingnavi]

You know what's sad, I'm a college student and I'm getting a better education on precalculus and trigonometry from these 16 minute videos than my teachers 1 hour and 50 minute lectures, thank the lord for these videos.

[triJack]

On the third example you used separate ace of one formulas for the top and bottom of the equation. Is it okay to do both the top and bottom of the fraction in one formula?

[Canakar]

What you say that if order doesn't matter (for example how many combinations of topings on a pizza) you can use the nCn formula??

[SerhiyKapustyan]

Do you have to write K in the nominator and the denominator of the formula, i dont understand your note when you wrote that you write N instead of K.

[susannaweir]

And also the general term- does it have to be memorized?