> | restart; |
> | u := (x,y) -> 3*cos(3*Pi*y)*sin(Pi*x) - 5*cos(48*Pi*y)*sin(16*Pi*x) + 4*sin(12*Pi*y)*sin(3*Pi*x); plot3d( u(x,y), x=0..2*Pi, y=0..0.5, labels =[`x`, `time`, `u(x,t)`], axes=FRAMED, style=patch); |
> | u1 := (x,y) -> 3*cos(3*Pi*y)*sin(Pi*x); plot3d( u1(x,y), x=0..2*Pi, y=0..0.5, labels =[`x`, `time`, `u(x,t)`], axes=FRAMED, style=patch); |
> | u2 := (x,y) -> - 5*cos(48*Pi*y)*sin(16*Pi*x) ; plot3d( u2(x,y), x=0..2*Pi, y=0..0.5, labels =[`x`, `time`, `u(x,t)`], axes=FRAMED, style=patch); |
> |
> | u3 := (x,y) -> 4*sin(12*Pi*y)*sin(3*Pi*x); plot3d( u3(x,y), x=0..2*Pi, y=0..0.5, labels =[`x`, `time`, `u(x,t)`], axes=FRAMED, style=patch); |
> |