The Geometric Configuration of the Solutions Of $\frac { d x } { d t } = 4 x - y , \frac { d y } { d t } = x + 2 y$

question 4

Multiple Choice

The geometric configuration of the solutions of $\frac { d x } { d t } = 4 x - y , \frac { d y } { d t } = x + 2 y$ in the phase plane is

• A) degenerate stable node
• B) degenerate unstable node
• C) stable spiral point
• D) unstable spiral point
• E) saddle point

---

Definitions:

Nun Study

A longitudinal study of aging and Alzheimer's disease among Catholic sisters, providing insights into the impact of intellectual and emotional factors on long-term health.

Linguistic Skills

The ability to use language effectively, including reading, writing, speaking, and listening, as well as an understanding of grammar and vocabulary.

Alzheimer's Disease

A progressive neurological disorder that causes brain cells to waste away and die, leading to a continuous decline in thinking, behavioral and social skills.

Chromosome 4

One of the 23 pairs of chromosomes in humans. People normally have two copies of this chromosome. Chromosome 4 is associated with some genetic disorders.