Let W be the plane with the equation 3x-y+ 7 = 0. Find the standard matrix P for the orthogonal projection onto W. Use the following formula P = A(A¹A)¹AT, where the matrix A is constructed using any basis for Was its column vectors. Enter the first row of the matrix P (in order) into the answer box below, separated with commas. i.e., enter the values P11 P12 P13.

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