Final answer:
The equilibrium point is (0,0). The system can be written in matrix form X' = AX, where X is a column matrix and A is a 2x2 matrix.
Step-by-step explanation:
To find the equilibrium point, we need to solve the system of equations:
dx/dt = -4x - 2y
dy/dt = 5x + 2y
(a) Equilibrium point occurs when both derivatives are zero:
-4x - 2y = 0
5x + 2y = 0
Solving these equations, we get x = 0 and y = 0. So the equilibrium point is (0,0).
(b) To write the system in matrix form, we have:
X' = AX
Where X is the column matrix [x, y] and A is the matrix [[-4, -2], [5, 2]].