1.(30 points) Find the solution of the initial value problem $y' = \frac{(x^3 + 4)(y^2 + y)}{(2y + 1)x^2}$, $y(2) = 1$ Solution: $\frac{dy}{dx} = \frac{x^3 + 4y^2 + y}{x^2(2y + 1)}$ separable eq.
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$$\frac{2y + 1}{y^2 + y} dy = \frac{x^3}{x^2} dx$$ Show more…
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