shamskhatik786 shamskhatik786

08-11-2021
Mathematics

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determinants and matrix
[tex] | \frac{7}{4} \ \frac{9}{3} | find \: determinant[/tex]

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HayabusaBrainly HayabusaBrainly

08-11-2021

>> Answer

_________

[tex] \ \:[/tex]

[tex] \sf{| \frac{7}{4} \frac{9}{3} | = a}[/tex]

[tex] \sf \: |a| = ad - bc[/tex]

[tex] \sf\: |a| = (7 \times 3) - (9 \times 4)[/tex]

[tex] \sf \: |a| = 21 - 36[/tex]

[tex] \sf \: |a| = \bold{ \blue{ - 15}}[/tex]

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