Question:medium

The order of the differential equation whose general solution is \(y = a \sin x + b \cos x\) is (where a and b are arbitrary constants)

Show Hint

A very quick way to solve this type of problem is to simply count the number of independent arbitrary constants in the general solution. This count directly gives you the order of the differential equation.
  • 2
  • 4
  • 1
  • 3
Show Solution

The Correct Option is A

Solution and Explanation

Step 1: Understanding the Question:
Classify dy/dx = -(x+y)/(1+x²).

Step 2: Key Formula (Alternate):
Rearrange to dy/dx + P(x)y = Q(x) form to identify linear DE.

Step 3: Detailed Explanation:
dy/dx = -x/(1+x²) - y/(1+x²) → dy/dx + (1/(1+x²))y = -x/(1+x²). Linear first order.

Step 4: Final Answer:
First order Linear equation.
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