To get the differential equation form an algebraic equations we need to remove the arbitrary constants by differentiating equation.
As, v =
We need to remove both parameters A and B to get the differential equation.
Differentiating w.r.t to r ,we get-
Again differentiating w.r.t r. Applying product rule of differentiation to evaluate LHS of equation.
⇒ is the required differential equation.
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