sage: desolve_laplace(DEiii, [t,y], [0,50,0])
?%ilt(-(1521*'laplace('y(t)^2*'diff('y(t),t,1),t,false)+3900*'laplace
('y(t)*'diff('y(t),t,1),t,false)+2500*sqrt(2)*'laplace(sqrt(g*'y
(t)),t,false)-125000)/(2500*false),false,t)
Looks like yet another Maxima expression we'll need to build into
kcrisman kcris...@gmail.com writes:
Of course, it would be worth seeing whether one of the other CASs can
solve this one exactly.
possibly FriCAS can, it seems:
(2) - DEiii := %pi * (39/100*y t+ 1/2)^2* D(y t,t) + a * sqrt(2*g*y t)
2 ,
I'm using:
Sage Version 4.1.1, Release Date: 2009-08-14
We just started laplace in my class, so I did not know that laplace
transforms don't solve non linear ode's. Sorry :p
On Nov 11, 12:01 pm, David Joyner wdjoy...@gmail.com wrote:
On Wed, Nov 11, 2009 at 1:19 PM, Jaasiel Ornelas
On Wed, Nov 11, 2009 at 3:10 PM, Jaasiel Ornelas jrodri1...@gmail.com wrote:
I'm using:
Sage Version 4.1.1, Release Date: 2009-08-14
Okay. The above was done with Sage 4.2, so may or may not work in your version.
We just started laplace in my class, so I did not know that laplace
As you pointed out, the equation has separated variables, so it must
work allmost in any version
Perhaps problems with keepfloat:true. Is you replace 0.5 by 1/2,
everything works.
See below
Robert
[ma...@um-bc107 /opt/sage]$ ./sage
Ok. I'm downloading 4.2 to see what happens, otherwise, I'll just do
it by hand.
On Nov 11, 12:13 pm, David Joyner wdjoy...@gmail.com wrote:
On Wed, Nov 11, 2009 at 3:10 PM, Jaasiel Ornelas jrodri1...@gmail.com wrote:
I'm using:
Sage Version 4.1.1, Release Date: 2009-08-14
Okay. The
On 11 lis, 21:53, Jaasiel Ornelas jrodri1...@gmail.com wrote:
Ok. I'm downloading 4.2 to see what happens, otherwise, I'll just do
it by hand.
Dous not help, Sage 4.2 cannot solve your equation if you use 0.5 and
not 1/2
Change number 0.5 into 1/2 or use Maxima.
Robert
On 11 lis, 21:10, Jaasiel Ornelas jrodri1...@gmail.com wrote:
I'm using:
Sage Version 4.1.1, Release Date: 2009-08-14
We just started laplace in my class, so I did not know that laplace
transforms don't solve non linear ode's. Sorry :p
Are you student? If you put your equation (with a
You sir...
Are...
a genius.
On Nov 11, 12:13 pm, David Joyner wdjoy...@gmail.com wrote:
On Wed, Nov 11, 2009 at 3:10 PM, Jaasiel Ornelas jrodri1...@gmail.com wrote:
I'm using:
Sage Version 4.1.1, Release Date: 2009-08-14
Okay. The above was done with Sage 4.2, so may or may not work
