Step 1: Understanding arbitrary constants.
For a differential equation of order \( n \), the number of arbitrary constants in its particular solution is \( n \).
Step 2: Conclusion.
Thus, for a third-order differential equation, the number of arbitrary constants is 3.
If \( y = \sqrt{e^x} \), \( x > 0 \), then \( \frac{dy}{dx} = \underline{\hspace{2cm}} \)
Order of differential equation \( xy \frac{d^2y}{dx^2} + x \left( \frac{dy}{dx} \right)^2 - y \frac{dy}{dx} = 0 \) is 2.
Find the general solution of the differential equation \[ x \frac{dy}{dx} + 2y = x^2 \,\,\, \text{where} \,\,\, (x \neq 0). \]