A logarithmic spiral extending out of the singular point is__________
A. Stable
B. Unstable focus
C. Conditionally stable
D. Marginally stable
Answer:B
A logarithmic spiral extending out of the singular point is__________
A. Stable B. Unstable focus C. Conditionally stable D. Marginally stable
Explanation: Unstable focus is a logarithmic spiral extending out of the singular point.