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please help with q(3) and q(4): (a) and (d) only 3. 1Which properties of determinants enable us to write the following? 9 18 9 13

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please help with q(3) and q(4): (a) and (d) only

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3. 1Which properties of determinants enable us to write the following? 9 18 9 13 9 2? 3 {\"3 27 ssIo (\")4 '3 2 1 4. Test whether the following matrices are nonsingular: 4 o 1 I? 1 0 (a) 191 3 (c) 1 1 4 7 1 0 13 3 4 421 495 (ta$60 (d) 301 703\". _ \"33.5

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