1. Calculus Help: Exact Differential Equations: 3y^3 dx+9xy^2 dy=0 - Techniques

    Calculus Help: Exact Differential Equations: 3y^3 dx+9xy^2 dy=0 - Techniques

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  2. Determine whether the given equation is exact (2y-1/x+cos(3x) dy/dx +y/x^2-4x^3-3ysin(3x)=0

    Determine whether the given equation is exact (2y-1/x+cos(3x) dy/dx +y/x^2-4x^3-3ysin(3x)=0

    16