Let u₁ and u2 be two linearly independent solutions of the second-order linear differential equation (i) (ii) d²u dx² 2 fu + = Let w = u2/u1. Show that w' = c/u for some nonzero constant c. -2u1/u₁. Show that y satisfies the Ricatti equation Let y = y' - 0, ƒ = f (x). y² 2 - f.

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