???? MATRICES AND DETERMINANTS FOR MILITARY COMPETITIONS-CLASS 2 (ESA, EEAR, ESPCEX AND EAM)

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Praticando Matemática com Maicon Meneguci

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Hello student!! Do you want to pass the military exams? In this class I will teach you some military exam questions so you can ace the military exams. ???? GET THE BEST MATHEMATICS COURSE FOR MILITARY EXAMS: https://praticandomatematica.com/ ???? BEST PLAYLIST FOR MILITARY EXAMS: https://bit.ly/3bNf0LK ???? ESA: https://bit.ly/36iVaFC ???? EEAR: https://bit.ly/2HCCRQw ???? ESPCEX: https://bit.ly/34j1CL0 ✅ TELEGRAM GROUPS FOR YOU TO DOWNLOAD MATERIALS!! ESA/EEAR/ESPCEX: https://t.me/pratmatesa ????FOLLOW ON INSTAGRAM: https://www.instagram.com/praticandom... MATHEMATICS FOR MILITARY COMPETITIONS – MATRIXES AND DETERMINANTS (CFT 2013) If A=left( egin{matrix}1&00&2end{matrix} ight) and B=left( egin{matrix}-1&1 0&2end{matrix} ight) 2(EEAR 2013) Let the matrix A=left( egin{matrix}4&2-6&2end{matrix} ight) and the matrix X=1/2A have as the sum of its elements the value a) 7. b) 5. c) 4. d) 1. 3(EEAR 2016) Consider the real matrices A=x²12y+z and B=left( egin{matrix}9&zy&-xend{matrix} ight). If A=B^t, then y+z is equal toa) 3 b) 2 c) 1 d) -1 4-(CFT 2013) In the equation left egin{matrix}4&x5&x+2end{matrix} ight=x, the value of x is ____. 5 4 5-(EsPCEx 2000) The solution set of the inequality left egin{matrix}1&0&-1k&1&31&k&3end{matrix} ightle0 is: left{kinmathbb{R} -4le kle1 ight} left{kinmathbb{R} -1le kle4 ight} left{kinmathbb{R} kle-1 or kgeq4 ight} left{kinmathbb{R} kle-4 or kgeq1 ight} emptyset 6-(EsPCEx 2002) The matrices A, B and C are of type r x s, t x u and 2 x w, respectively. If the matrix (AB).C is of type 3 x 4, then r + s + t + u + w is equal to: 10 11 12 13 14

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