Given a vector field $$\overrightarrow F ,$$ the divergence theorem states that

Let $$Y(s)$$ be the Laplace transform of function $$y(t),$$ then the final value of the function is __________.

Given a vector field $${\overrightarrow F ,}$$ the divergence theorem states that

The determinant of the matrix $$\left[ {\matrix{ 1 & 0 & 0 & 0 \cr {100} & 1 & 0 & 0 \cr {100} & {200} & 1 & 0 \cr {100} & {200} & {300} & 1 \cr } } \right]$$ is