Answered
Hi,
Having used the TaylorPolynomial command in the Input bar, and got unsimplified coefficients, which then became ugly fractions on using the Simplify command, I was pleased to see that CAS gave me a very nice fractional display, just as I would write out 'by hand'.
However, on switching on the radio button to display the function, the algebra changed from ascending powers of x (usual display for UK, I think) to descending powers of x, which is a bit annoying and confusing for students. I can enter it twice and just display graphically once, but is there a way to avoid the change occurring?
K.
The same problem 
Hi,
On the same subject, the annoying polynomial display on a Jonas (tmm) example below.Cheers, :wink:
Phil
Hi,
Still Taylor Polynomials:
TaylorPolynomial[(1-3x)^(1/3),0,4]
works in Input bar (although with unsimplified coefficients), but gives ? in CAS.
K.
Hi,
Taylor in CAS does not currently support x^(a/b) or cbrt (https://jira.geogebra.org/b... ).
TaylorPolynomial[exp(ln(1-3x)/3),0,4]
works though.
Cheers,
Zbynek
Devious! Not sure my students will think of work arounds like that, though!
Any chance of simplifying the coefficients in the algebra view, to 'nice' fractions?
Or adding a command for binomial expansion? (I can work it out for myself, or use someone else's work, but for checking answers in student work it would be so-o-o-o convenient when I am feeling lazy or tired! :confused: )
K.
Hi,
to get the fractions in algebra you may use Expand[] command. And the workaround above is realy just a workaround, I hope we will be able to fix that in CAS view.
Cheers,
Zbynek
Great! Missed that one: I was trying Simplify!
K.
This now works, thanks for the report:
TaylorPolynomial[(1-3x)^(1/3),0,4]
Thanks Murkle!
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