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Solve the initial value problem: y'' + 2y' = 2 - 5cos(x), y(0) = 0, y'(0) = 1.

User Ahill
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Final answer:

To solve the initial value problem y'' + 2y' = 2 - 5cos(x), y(0) = 0, y'(0) = 1, we can use the method of undetermined coefficients. The general solution is y = c1 + c2*e^(-2x) + (1/2)*cos(x) - (5/4)*sin(x).

Step-by-step explanation:

To solve the initial value problem y'' + 2y' = 2 - 5cos(x), y(0) = 0, y'(0) = 1, we can use the method of undetermined coefficients.

First, we find the homogeneous solution by solving the characteristic equation r^2 + 2r = 0. This gives us r = 0 and r = -2. Therefore, the homogeneous solution is y_h = c1 + c2*e^(-2x).

Next, we look for a particular solution. Since the right-hand side contains a cosine term, we assume a particular solution of the form y_p = A*cos(x) + B*sin(x). Plugging this into the differential equation gives us A = 1/2 and B = -5/4. Therefore, the particular solution is y_p = (1/2)*cos(x) - (5/4)*sin(x).

Finally, the general solution is y = y_h + y_p = c1 + c2*e^(-2x) + (1/2)*cos(x) - (5/4)*sin(x).

User Theodora
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