On Mon, Jan 22, 2024 at 11:03 AM Linden Disney wrote:
>
> In Sage 9.8 I ran the following code:
>
> R. = QQ[]
> f = x*(1^5+z^5) + (x*1*z)^2 - x^4*1*z - 2*1^3*z^3
> S = Curve(f).riemann_surface()
> S.riemann_matrix()
>
> and got a ValueError occurring inside rigorous_line_integral.
In Sage 9.8 I ran the following code:
R. = QQ[]
f = x*(1^5+z^5) + (x*1*z)^2 - x^4*1*z - 2*1^3*z^3
S = Curve(f).riemann_surface()
S.riemann_matrix()
and got a ValueError occurring inside rigorous_line_integral. This error
doesn't occur if instead for the first line I used "R. = QQ
I reproduced this in sage 4.8, but with different results:
sage: f(x) = sin(x)^2/x^2
sage: f.integral(x, -5, 5).n()
-0.20071537570
sage: f.integral(x, -500, 500).n()
-2.0008410959e-7
sage: f.integral(x, -5, 5).n()
-2.109169e-9
The answer seems t
I reproduced this in sage 4.8, but with different results:
sage: f(x) = sin(x)^2/x^2
sage: f.integral(x, -5, 5).n()
-0.20071537570
sage: f.integral(x, -500, 500).n()
-2.0008410959e-7
sage: f.integral(x, -5, 5).n()
-2.109169e-9
The answer seems t
Hi,
sage 5.0 beta11, on Fedora 15, AMD Phenom II X4:
sage: f(x) = sin(x)^2/x^2
sage: f.integral(x, -infinity, infinity)
x |--> pi
sage: f.integral(x, -infinity, infinity).n()
3.14159265358979
sage: f.integral(x, -5, 0).n() + f.integral(x, 0, 5).n()
3.1415769097886317
everthing fine so fa
