pizza's profile - activity

I think making a list of your points and then plotting point3d(L) would do. point3d(L) is useful to me, I think it would do what you want?

In addition to my answer, I would like to say that viewers such as jmol, tachyon, etc. can show your plot.

For some information about hyper arrangements, this link helps too. I search on the Internet and found this handy.

doc.sagemath.org/html/.../hyperplane_arrangement/arrangement.html

If you find using sage a bit hard ( I guess you won't!) you can try GeoGebra.

1/1-x = x^0+x^1+x^2+...

How can I type in such a command of an adding-to-infinity sum?

Urgent! If anyone have any answer or suggestion, please type in here! Thanks!

Thank you!

How can I calculate this sum?

1/1-(x+x^2)^2

• This is the sum of infinity formula : a/1-r, while a=1 and r=(x+x^2)^2 Please also confirm if my formula is right.

Thanks for your suggestion, I do think Geogebra is a good tool.

Thanks for your explanation!

How can I describe incircles and calculate its area with sage?

For example, like if you know the triangle with sides' length 4,6 and 9, how can I know the incircle's area with sage?

Well, this is a request instead of a question. Could you say clearly for what you want Sage to do?

Anyone could answer me after all?

Anyway, I can't really be sure that your answer is correct, right? :P And I must state where I get the reference in my homework, or my teacher will fail me AT ONCE.

Hi! First post!

When I type " k^2 for k in [1..20] ",

it says

" k**Integer(2) for k in (ellipsis_range(Integer(1),Ellipsis,Integer(20))) ^ SyntaxError: invalid syntax "

What can I type?

​

In quadrilateral ABCD, <bad =="" <adc="" and="" <abd="&lt;BCD." if="" ab="8," bd="10" and="" bc="6," how="" long="" is="" cd?<="" p="">

I suspect using sin cos tan may help.

Any idea how to do this, either by sage or by hand?

Moreover, as I am a beginner in using sage programme. and I am not advance in maths (Sorry!), could you explain what kind of precise questions I should ask for you to answer my question? Thanks!

Yes, I suppose that the question also wants me to add the numbers to infinity. But I guess adding up a certain amount of terms might be enough to estimate the sum of infinity of this sequence.

I appreciate you for helping me.

However, what I want to do is not adding up continuous terms of the sequence. I want to add the 1st, 2nd, 4th, 7th, 10th, ... positive fibonacci numbers, which you would notice, +1 +2 +3 +4 +5

I know that this is not quite an easy question, so if you have time you could just give it a try. THANK YOU!

Do you find it a must to use sage instead of python?

I am using Cocalc recently, but I would also like to try SageMath. Could anyone give me any idea what kind of function is in SageMath but not in Cocalc?

Could anyone tell me, what is the difference between Sage and Cocalc?

Any answers would be accepted.

Thank you!

How can I find the sum of fibonacci (1) + (2) + (4) + (7) + (11) + (16) + ... ?

• The numbers in () means the terms of fibonacci sequence