Question: Use the idea in Problem 57 to solve the equation Problem 57 Show that the substitution v = ln y transforms the differential equation dy/dx

Use the idea in Problem 57 to solve the equation

Problem 57

Show that the substitution v = ln y transforms the differential equation dy/dx + P(x)y = Q(x)(y ln y) into the linear equation dv/dx + P(x) = Q(x)v(x).

x dy dx - 4x2y + 2y ln y = 0.

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