Sigma Notation and Summation Notation

This algebra and precalculus video tutorial provides a basic introduction into solving summation problems expressed in sigma notation. It also explains how to find the sum of arithmetic and geometric sequences.

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[cw]

Thanks for making it simple. Pre-Calculus and Calculus can be daunting when taught by the wrong educator - teach our future.

[seasonalfog]

You are such a good teacher. Saying this as someone who has been a student and a teacher. Of all the teachers I've had from pre K through grad school you definitely stand out as someone who understands the tacit skill of conveying complex information to a beginner

[THEELEMENTKING]

I can’t tell why for certain, but this tutorial was one of the best I watched for summation. I really can’t describe it but it was just so good

[undeadnedstark]

In my classes it took many days to teach this
And u did it in 15 minutes ...
Respect.

[acediego]

Man I'm taking O Chem and Calc 1 basically all asynchronous this past semester so I've been putting this channel on double duty. Thank you JG bro

[theobserver]

This is the most straight forward video I have ever!

[bonifackener]

I cant believe that for years i was stressed about (having to learn one day) Σ expressions.
Their usage is literally understandable after watching a minute of this video.
Thank you so much :))

[justinmay]

Love it❤ thank you for the lesson, I really appreciate it👋 All the way from South Africa

[haimepiphany]

I remember my favorite math teacher when I was in my 11th grade, this is the topic he discussed that I solved in my exam in his subject for the first time. I am one of those students who hates math but ofcourse there is always a math teacher you will love that despute you hate the subject unconciously you will love the subject because of the teacher.

[doris]

6:40 you could also replace the n by 100 in the formula (4*100 + 5 = 405)
btw, I love your lessons! They honestly have helped me a lot, factoring is now easy for me because of you, and I know this one will be helpful as well! Thank you!

[VedhGajawada-jtri]

I am going to start high school in a month and they barely covered arithmetic and geometric sequences. Thanks to you, I was able to learn about them and I even was able to grasp the Σ notations. I found them very interesting! Thank You for teaching so well!

[ceoof]

LOVE THE LESSONS!
you r actually really hard working thanks for the lessons

[daniloskrrr]

I don't usually watch tutorial videos 15 mins long but this was an exception😍🙂

[maseeha.m.i]

This man saved my academic career, God bless

[marcus]

Thank you so much! You are really helping me learn math in a time-efficient effective way! You're a G.

[yeabsirahenok]

Am taking a test tomorrow i almost gave up till this video tnx so much

[zkpbz]

when he started to find sum notations with algebraic and geometric sequences, I was just 😦🤯… never knew that. thank you sm🥺

[alexcardoso]

You could have also found the last term in the series at 6:00 by plugging in the 100 for n in the 4n + 5 expression.

[amanofia]

Thanks for your work.You are making life of millions of high schoolers easier!!

[LaunchingFlames]

Thank you. I haven't done sums in years, and this helped me with my sister's homework.