Answer: 1.
- A 1
- B 2
- C 0
- D 3
Correct answer: A. 1
Explanation: The highest derivative is the first derivative dy/dx, so the order is 1.
The general solution y=Ax² represents an entire FAMILY of curves, one for each value of the arbitrary constant A; a particular solution (fixed by an initial condition) selects exactly one curve from this family.
Concept context
Equations involving derivatives and their solutions