09-27-2017, 03:04 PM

10-22-2017, 05:41 PM

(09-27-2017 03:04 PM)DrD Wrote: [ -> ]Can displayed results with fractional powers be shown with an equivalent radical (√) sign, instead? Is there a toggle for this?

-Dale-

do you mean symbolic results?

I'm curious too how to obtain conversion, i.e., from 1/(x^3) into [3]√x or thing like that...

\( x^{\frac{1}{3}} \space \text{::} \sqrt[3]{x} \)

10-22-2017, 06:39 PM

Yes. I haven't found a way to do that.

10-22-2017, 10:00 PM

If it's in there it'd be in one of the algebraic expansion functions.

10-24-2017, 02:49 AM

There is a way to do this in a program. You'd have to write a function as follows...

Convert the expression to a string. Then, wherever NTHROOT shows up in the string, substitute for dd NTHROOT x with x^(1/dd). Likewise, to go the other direction, search for x^(1/dd) and convert to dd NTHROOT x, still in string format.

Then call EXPR on the result.

Enjoy. Publish this if you write it :-)

Convert the expression to a string. Then, wherever NTHROOT shows up in the string, substitute for dd NTHROOT x with x^(1/dd). Likewise, to go the other direction, search for x^(1/dd) and convert to dd NTHROOT x, still in string format.

Then call EXPR on the result.

Enjoy. Publish this if you write it :-)

10-28-2017, 03:15 PM

I'd like to have something like QPI (see here), but more general (also for x and variables) and ...built in in the CAS. Maybe someday... who knows?

Salvo

EDIT: however, for now, i.e., in Home QPI(x^(½)) returns 0, in CAS it, after some time, returns "Error: insufficient memory"... and no result.

Salvo

EDIT: however, for now, i.e., in Home QPI(x^(½)) returns 0, in CAS it, after some time, returns "Error: insufficient memory"... and no result.

10-30-2017, 06:12 AM

Hello,

The problem is that this is a hard nut to crack and can yeild fairly long calculations.

Cyrille

The problem is that this is a hard nut to crack and can yeild fairly long calculations.

Cyrille