Explain why the matrices are or are not invertible Explain in words .pdf
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The document discusses the invertibility of 4 matrices. Matrix (a) is invertible because its determinant is not equal to 0. Matrix (b) is not invertible because it is not a square matrix. Matrix (c) is not invertible because its determinant is equal to 0. Only matrix (d) is invertible, as its determinant is not equal to 0 and it has an inverse.
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Explain why the matrices are or are not invertible Explain in words .pdf
- 1. Explain why the matrices are or are not invertible Explain in words why the following matrices are or are not invertible, but do not find the inverse matrix. Solution matrix (a) - Det=y matrix (b) - is not square matrix matrix (c) - is Det=0 but for MATRIX (d) Det is notequal to zero and also INVERSE EXISTS.i.e. Det(d)= - 40 so I CAN CONCLUDE THAT INVERSE EXIST FOR MATRIX (d) only.