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Question : we have the ridge regression which introduces a squared is now penalty on the parameter in the MCE of B. we have : L(B ) = ( X B- 2) W ( x B -J ) + + 1/Bll, 2 for property defined diagonal. matrix W, matrix X and rectory, ANSWER : WHAT TO DO * Take derivative of L( P) and net to O. J Therefore find the closed form by taking the derivative L (B) and at to o