Question : Find a homogeneous linear differential equation with constant coefficients which is satisfied by the function y = 1 + x + cos^3 x

Question : Find a homogeneous linear differential equation with constant coefficients which is satisfied by the function y = 1 + x + cos^3 xSolution :Given function \[y\ =\ 1\ +\ x\ +\ cos^3\ \ x \] (1)Differentiating this function…

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