1/6 y^{''}+6y=4tan(6t)-1/2 e^t

解

\frac{1}{6} y^{^{''}} + 6 y = 4 tan (6 t) - \frac{1}{2} e^{t}

y = c_{1} cos (6 t) + c_{2} sin (6 t) - \frac{9 e ^{t} cos ^{2} ( 6 t ) + 9 e ^{t} sin ^{2} ( 6 t ) + 74 cos ( 6 t ) ln ( sec ( 6 t ) + tan ( 6 t ) )}{111}

解答ステップ

\frac{1}{6} y^{''} (t) + 6 y = 4 tan (6 t) - \frac{1}{2} e^{t}

線形 ODE を解く:

y = c_{1} cos (6 t) + c_{2} sin (6 t) - \frac{9 e ^{t} cos ^{2} ( 6 t ) + 9 e ^{t} sin ^{2} ( 6 t ) + 74 cos ( 6 t ) ln ( sec ( 6 t ) + tan ( 6 t ) )}{111}

y = c_{1} cos (6 t) + c_{2} sin (6 t) - \frac{9 e ^{t} cos ^{2} ( 6 t ) + 9 e ^{t} sin ^{2} ( 6 t ) + 74 cos ( 6 t ) ln ( sec ( 6 t ) + tan ( 6 t ) )}{111}