NCERT Example 17 - Differential Equations
Question: Find the particular solution of dy/dx + y cot x = 2x + x^2 cot x (x != 0) given y=0 when x=π/2.
Answer: y = x^2 - π^2/(4 sin x) (sin x != 0).
Full step-by-step NCERT solution with diagrams on Something by Zero.