Casio Classwiz FX-991EX: Summation and Sigma Notation

In this video I will show you how you can complete summations with sigma notation using a Casio Classwiz FX-991EX scientific calculator.

[@pierQRzt180]

neat, is it there a way to make a summation of a summation?

[@zeidan1]

thanks a lot

[@md.adamali1351]

How to use Infinity in upper of summation!

[@wavelength0123]

Is this possible on the fx-300ES Plus?

[@estefannia891]

():

[@wallride2wallride]

For those wondering how to do the same on the new FX-991CW: CATALOG - Func Analysis - Summation(Σ)

[@brentspineDev]

Thank god, I couldn't find anything

[@gopaldeotare2015]

How to show infinite sign (∞)

[@jack002tuber]

I have the older casio cfx 9850 gb plus, much harder to use. All the functions are buried in menus.

[@estefannia891]

T_T

[@pierQRzt180]

but still working! Don't discount old things only because they don't have the "feedback" newer things have (and sometimes don't). In the worst case you can resell the 9850

[@spyne.98]

How did you do it

[@brentspineDev]

They downgraded with the newer version as well. They are BACK to hiding everything in submenus of submenus. At least we can now throw dices and coins using a calculator. Thank you casio, VERY COOL :)

[@devd_rx]

how to sum to infinity?

[@estefannia891]

:()