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) According to the Method of Undetermined Coefficients, how many undetermined coefficients are needed to find a particular solution of the following differential equation?

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  • $\begingroup$ Welcome to MSE. Don't use picture in the question session. Use MathJax formatting to mathematical expressions. See math.meta.stackexchange.com/questions/5020/… $\endgroup$ – nmasanta Apr 16 at 3:33
  • $\begingroup$ Also to get better response, show your work and indicate where you stuck $\endgroup$ – nmasanta Apr 16 at 3:34