Sequences and Series on the TI83/84 Graphing Calculator 

Expr is short for expression (the formula you use) Variable is the variable used in the formula (if 5x-2, the variable is x) Start is your starting term's number/place in the sequence End is your ending term's number/place in the sequence Step is the increments of the variable (usually not needed) --- Hope this helps ;) ---

Thanks! I have a calc 2 test in like 30 mins and wanted to figure ut how to do this on my Ti-84 so it saves me time espeically with taking the limits of sequences! thanks again

Thank you, for posting this video. It really helped me to understand how to use this calculator to find a sum of sequence.

fantastic demo! very to the point and easy to follow

very helpful - thanks! I'm using the ti-84 plus ce and it was obvious what to do differently than on the calculator you used for the demo.

You deserve good things in life.

Thanks for this, now I can cheese every sequence and series question on the act

I don't get the same screen you do when you select #5 under the ops. my screen looks like this Expr: Variable: Start: end: step: Paste: I don't know what to do from here

expr is the equation, variable is x, start is what you start at here it was 1, end is where you want to stop here it was 8, step is how much n increases bu each time here it was 1

Great video, thank you!!

God bless you!

You’re a Godsend

Whenever I hit 5 the get sequence mine does not just go to home screen. There is an input screen before that. How do you get rid of it?

Very helpful

Thank you so much!

Thanks

You're amazing

But what about the opposite?? How to find a formula based on a number of terms? For example, the formula for the terms (1, -3, 5, -7, 9,...) is ((1)^n)(2n+1). But is there a way to use the calculator to plug in those terms and get the formula?

My sum((2,4,6,8)) says error when I press enter

That's very helpful video. I'm just a bit confused with my TI84Plus calculator as sum(seq(....)) inside sum() which is seq() isn't working although I set seq mode from mode button. Any helps please?

Thanks man

Thank you

Hello! I need a bit help, i hope you can help me. I want to use my TI-89 calculator to solve the following two expressions: n=1->oo (infinite) ∑(ln(n)/n) and ∑(ln(n^n)/n^2) I need to know that these kind of equtations are convergent or not?! Is there any way the calculator can solve this problem? Thank you for your help, best regards, Lac

I get a different screen after 2nd list ops 5.

How do i do this on my casio fx-CG50

did you ever figure this out?

nice

Nope never really figured it out

((sniff)) t-thank you so much :')

God dammit. I keep getting 160,000 and I'm supposed to be getting ~20,000

did you ever figure this out?