Answer Happy • 4. Solve the partial differential equation (D² – DD' — 2D¹²)z = (2x² + xy - y²) sin(xy) — cos(xy).

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4. Solve the partial differential equation (D² – DD' — 2D¹²)z = (2x² + xy - y²) sin(xy) — cos(xy).

Posted: Mon Jul 11, 2022 12:43 pm

by answerhappygod

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4. Solve the partial differential equation (D² – DD' — 2D¹²)z = (2x² + xy - y²) sin(xy) — cos(xy).