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Variation of Parameters

Given $y_h=c_1 y_1 + c_2 y_2$ we wantto find $u_1, u_2$ s.t. $D_x(u_1)y_1 + D_x(u_2)y_2 = 0$ and $D_x(u_1)D_x(y_1)+ D_x(u_2)D_x(y_2)= g(x)$. We can find precise values using the Wronskian.


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