Suppose A is an invertible matrix. Which of the following statements are true? Explanations would be greatly appreciated!
(a) A can be expressed as a product of elementary matrices.
(b) A is row equivalent to the nxn identity matrix.
(c) The equation Ax=0 has only the trivial solution.
(d) The determinant of A is positive.
(e) The transpose of A is also an invertible matrix.
(f) A has a unique row echelon form.
(g) The equation Ax=b may have two distinct non zero solutions for a non zero vector b.

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a, b, c and e are true.
d and g are not true
f i'm still debating

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