Solution
= Solution
The <eigenvalues> are a nonreal conjugate pair $\boxed{\alpha\pm i\beta,\ \alpha>0,\ \beta\ne0}$. The exponential factor expands while the imaginary part produces rotation, giving an <unstable spiral>.
= Solution
The <eigenvalues> are a nonreal conjugate pair $\boxed{\alpha\pm i\beta,\ \alpha>0,\ \beta\ne0}$. The exponential factor expands while the imaginary part produces rotation, giving an <unstable spiral>.