document.write( "Question 177722: Find the determinant of each matrix. i cant find how to do this in my book. so please write the steps with answers. thank you\r
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Algebra.Com's Answer #132716 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Use Google with search string \"matrix determinant\" \n" ); document.write( "to see how determinants are calculated. \n" ); document.write( "------------- \n" ); document.write( "Your Problems: \n" ); document.write( "[-6 -7] \n" ); document.write( "[5 8] \n" ); document.write( "D = (-6*8)-(-7*5) = -48 + 35 = -13 \n" ); document.write( "-----------------------------------------\r \n" ); document.write( "\n" ); document.write( "[1 -5] \n" ); document.write( "[-2 9] \n" ); document.write( "D = (1*9)-(-5*-2) = 9 - 10 = -1 \n" ); document.write( "------------------------------------\r \n" ); document.write( "\n" ); document.write( "[1 2 3] \n" ); document.write( "[6 0 5] \n" ); document.write( "[0 4 0] \n" ); document.write( "D = (1*0*0 + 6*4*3 + 0*5*2)-(3*0*0 + 5*4*1 + 0*6*2) \n" ); document.write( "= (0+72+0) - (0+20+0) = 52 \n" ); document.write( "----------------------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |