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2021-07-13 16:56:13 +0200	received badge	● Notable Question (source)
2020-09-22 14:31:24 +0200	received badge	● Popular Question (source)
2012-06-02 14:21:13 +0200	received badge	● Student (source)
2012-06-02 02:07:22 +0200	commented question	Working with series yes, generally Puiseux series would be better, but sin t is to return Taylor expansion around zero if it doesn't specified in it's type directly.
2012-06-01 16:07:02 +0200	asked a question	Working with series I can't get how to work with series. I do `sage: R.<t> = PowerSeriesRing(QQ) sage: t^2 t^2 sage: sin(t)` but the last rises an error. I want to do usual manipulations like `sin(t)/cos(t+2)^2`.
2012-06-01 15:39:47 +0200	received badge	● Scholar (source)
2012-06-01 15:39:47 +0200	marked best answer	Output Types in Shell You can use the `type` command: `sage: a = Sq(3) sage: type(a) <class 'sage.algebras.steenrod.steenrod_algebra.SteenrodAlgebra_mod_two_with_category.element_class'> sage: DE = y.diff(x,x) + y == 0 sage: z = desolve(DE, y) sage: type(z) <type 'sage.symbolic.expression.Expression'>`
2012-05-29 14:15:00 +0200	received badge	● Supporter (source)
2012-05-29 07:33:20 +0200	received badge	● Editor (source)
2012-05-29 07:30:57 +0200	asked a question	Output Types in Shell Does sage use essentially typeless language? If no, is there a way to output type in the shell, preferably always along with the answer. Just like Axiom does it: `(1) -> x := series 'x (1) x Type: UnivariatePuiseuxSeries(Expression(Integer),x,0) (2) -> (sin x) / (cos x) 1 3 2 5 17 7 62 9 1382 11 12 (2) x + - x + -- x + --- x + ---- x + ------ x + O(x ) 3 15 315 2835 155925 Type: UnivariatePuiseuxSeries(Expression(Integer),x,0)` Fore some reason unicode doesn't display here.