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Jupyter notebook variacion_de_parametros.ipynb
Project: FIUP Ecuaciones Diferenciales 2017-1
Views: 30Kernel: SageMath 7.3
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[{u: sec(x), v: -cos(x)*sec(x)/(cos(x)^2 + sin(x)^2), w: -sec(x)*sin(x)/(cos(x)^2 + sin(x)^2)}]
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sec(x)
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Ecuación diferencial:
-sec(x) + Derivative(f(x), x) + Derivative(f(x), x, x, x)=0
Solución:
Eq(f(x), C1 + (C2 - x)*cos(x) + (C3 + log(sin(x)**2 - 1)/2)*sin(x) - log(sin(x) - 1)/2 + log(sin(x) + 1)/2)
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