Eigenvalue growth rates

1. A.x(t) is a bounded solution for some $x_0\ne 0$.
2. B.$e^{-6t}$|x(t)| → 0 as $t\to \infty$, for all $x_0\ne 0$.
3. C.$e^{-t}$|x(t)| $\to \infty$ as $t\to \infty$, for all $x_0\ne 0$.
4. D.$e^{-10t}$|x(t)| → 0 as $t\to \infty$, for all $x_0\ne 0$.✓

The trap it tests

Numerical convergence

A scheme assumed to converge, or to converge at its advertised rate.