Solve :

(D ^ 4 + 2a ^ 2 * D ^ 2 + a ^ 4) * y = 8cos ax

asked by guest
on Mar 23, 2025 at 6:10 pm



You asked:

Investigate the equation: (D4+2a2D2+a4)⋅y=8cos⁡(ax)\left({D}^{4} + 2 {a}^{2} {D}^{2} + {a}^{4}\right) \cdot y = 8 \cos\left( a x \right).

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