if V=(u(x,y,t),v(x,y,t),0) is vector field ( x,y space, t is time), how can find gradient of V in maple ?

how can solve ordinary differenatial equation in maple?

how can use laplce transformation for this equation in maple?

U0 := proc (x) options operator, arrow; cosh(sqrt(2)*x)-1 end proc;
sys_ode := diff(Uc(x), x, x)-(2*(1+U0(x)))*Uc(x) = 0;

Download a.mw

how can the graphic as .EPS

f(x,y)=sin(x)*cos(x) , -1<x,y<1

How can plot  f := proc (x, y) options operator, arrow; sin(x)*cos(y) end proc  as surface and contour (contour is project on surface)

How to change the numbers shown in the diagram shapes from y=0.5- to rigth form y=-0.5a.mw

Download a.mw