Recent content by keyns

Actually I have only one relation for u and v that I can write it as u(v) or v(u). Sorry for the confusion. Otherwise you would be right. To clarify my equations: (1) A relation for u and v (if I have u, I have v and vice versa) (2) A relation for u_{x} and v_{y} (if I have u_{x}, I have v_{y}...

The derivative of arctan(t)=1/(t^2+1). Differentiation in time-domain is the same as multiplication by s in Laplace-domain. See http://en.wikipedia.org/wiki/Laplace_transform for a table. You should be able to derive the correct answer from this.

I'm new, hi all. I have two coupled equations, one of which is continuity. Basically, my problem comes down to the following system: (1) u=f(v) (similarly, v=g(u). Here, u and v are the components of a vector field, ie u=u(x,y) and v=v(x,y). (2) Continuity: \nabla \cdot \textbf{u} = 0 or...