What is the solution for (d^3+3d^2-4)y=sinh^2(x)+7 ?

The solution for (d^3+3d^2-4)y=sinh^2(x)+7 is

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(d^3+3d^2-4)y=sinh^2(x)+7

(d^{3} + 3 d^{2} - 4) y = sinh^{2} (x) + 7

y = c_{1} e^{x} + c_{2} e^{- 2 x} + c_{3} x e^{- 2 x} - \frac{1}{108} e^{- 2 x} + \frac{1}{36} e^{2 x} - \frac{13}{18} + e^{- 2 x} \cdot \int \frac{e ^{2 x} ( 3 x - 1 ) ( sinh ^{2} ( x ) + 7 )}{9} d x + e^{- 2 x} x \cdot \int - \frac{e ^{2 x} ( sinh ^{2} ( x ) + 7 )}{3} d x

Solution steps

(d^{3} + 3 d^{2} - 4) y = sinh^{2} (x) + 7

Solve linear ODE:

y = c_{1} e^{x} + c_{2} e^{- 2 x} + c_{3} x e^{- 2 x} - \frac{1}{108} e^{- 2 x} + \frac{1}{36} e^{2 x} - \frac{13}{18} + e^{- 2 x} \cdot \int \frac{e ^{2 x} ( 3 x - 1 ) ( sinh ^{2} ( x ) + 7 )}{9} d x + e^{- 2 x} x \cdot \int - \frac{e ^{2 x} ( sinh ^{2} ( x ) + 7 )}{3} d x

y = c_{1} e^{x} + c_{2} e^{- 2 x} + c_{3} x e^{- 2 x} - \frac{1}{108} e^{- 2 x} + \frac{1}{36} e^{2 x} - \frac{13}{18} + e^{- 2 x} \cdot \int \frac{e ^{2 x} ( 3 x - 1 ) ( sinh ^{2} ( x ) + 7 )}{9} d x + e^{- 2 x} x \cdot \int - \frac{e ^{2 x} ( sinh ^{2} ( x ) + 7 )}{3} d x

What is the solution for (d^3+3d^2-4)y=sinh^2(x)+7 ?
The solution for (d^3+3d^2-4)y=sinh^2(x)+7 is