What is the solution for y^{''}+121y=cos(10t) ?

The solution for y^{''}+121y=cos(10t) is y=c_{1}cos(11t)+c_{2}sin(11t)+1/21 cos(10t)

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y^{''}+121y=cos(10t)

y^{^{''}} + 121 y = cos (10 t)

y = c_{1} cos (11 t) + c_{2} sin (11 t) + \frac{1}{21} cos (10 t)

Solution steps

y^{''} (t) + 121 y = cos (10 t)

Solve linear ODE:

y = c_{1} cos (11 t) + c_{2} sin (11 t) + \frac{1}{21} cos (10 t)

y = c_{1} cos (11 t) + c_{2} sin (11 t) + \frac{1}{21} cos (10 t)

\int 2^{\frac{1}{2}}

\frac{\partial}{\partial x} (x^{3} y^{3})

x \to + 0 lim (\frac{x ^{3}}{ln ∣ x ∣})

sin (2 x) + cos (2 x)

\frac{\partial}{\partial x} (e^{(\frac{y}{x})})

What is the solution for y^{''}+121y=cos(10t) ?
The solution for y^{''}+121y=cos(10t) is y=c_{1}cos(11t)+c_{2}sin(11t)+1/21 cos(10t)