1(a) ). Find all values of a such that the following matrix is not invertible. [1 3 3 0 a -1 11 a a (b) Find the change of basis matrix from B1 to B2. Then, if [y]p₁ ẞ1 B₁ = [1] =2, find [y]p₂ 13. 1 - 31 3 and B₂ = 2

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