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Solution of differential equation dy/dx = y/x:
Ay = x
By = Cx (separable; integrates to ln y = ln x + C)
Cy = x²
Dy = ln x
Answer & Solution
Correct answer: B. y = Cx (separable; integrates to ln y = ln x + C)
dy/y = dx/x → ln|y| = ln|x| + C → y = Cx.
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