Solve the IVP y' + y = sin(t) + cos(t) with y(0) = 1 by A) method of undetermined coefficients and B) method of variation of parameters

Question.

Solve the IVP y' + y = sin(t) + cos(t) with y(0) = 1 by

A) method of undetermined coefficients and

B) method of variation of parameters


Solution: