4. Use the method of variation of parameters to find the general solution of the following...

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4. Use the method of variation of parameters to find the general solution of the following differential equation (Hint: Observe that e" is one of the solutions of the homogeneous version of the differential equation). [6] xy" – (1+x)y/ + y = x²e2", x > 0. 4. Use the method of variation of parameters to find the general solution of the following differential equation (Hint: Observe that e" is one of the solutions of the homogeneous version of the differential equation). [6] xy" – (1+x)y/ + y = x²e2", x > 0.