Casio FX-991EX and FX-300ES

[Gerald H]

(12-24-2017 05:50 PM)Csaba Tizedes Wrote:  I have only one question - and if is it true, I'll buy a 991EX: The SOLVE can handle integrate and / or differentiate? For example, I want to know the integral interval width or I want to solve a differential equation, this means I must to solve for upper or lover limit of interval.

SOLVE can handle these two functions together? For example I want to solve mechanics problems like work-theorems (Betti's theorem).

Thanks,
Csaba

The 991 DE X can solve for upper or lower limit of an integral. eg for the upper limit of integral of 1/ln(x) with a lower limit of 2 & some value for the integral.