document.write( "Question 459225: Please help me solve this 4x4 matrix using cramer's rule
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document.write( "-x1-4x2+2x3+x4=-32
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document.write( "2x1-x2+7x3+9x4=14
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document.write( "-x1+x2+3x3+x4=11
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document.write( "x1-2x2+x3-4x4=-4 \n" );
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Algebra.Com's Answer #314962 by Edwin McCravy(20060)![]() ![]() You can put this solution on YOUR website! Please help me solve this 4x4 matrix using cramer's rule \n" ); document.write( "-x1-4x2+2x3+ x4=-32 \n" ); document.write( "2x1- x2+7x3+9x4= 14 \n" ); document.write( "-x1+ x2+3x3+ x4= 11 \n" ); document.write( " x1-2x2+ x3-4x4= -4\r \n" ); document.write( "\n" ); document.write( "That is a system of equations, not a matrix. \n" ); document.write( "Also, Cramer's rule involves determinants, \n" ); document.write( "not matrices. To solve this by hand using \n" ); document.write( "Cramer's rule with five 4x4 determinants would \n" ); document.write( "take hours.\r \n" ); document.write( "\n" ); document.write( "Here's the solution: x1=5, x2=8, x3=3, x4=-1\r \n" ); document.write( "\n" ); document.write( "Tell us what way you're supposed to solve it \n" ); document.write( "and we'll help you. Did you mean Gaussian \n" ); document.write( "elimination? \r \n" ); document.write( "\n" ); document.write( "Edwin \n" ); document.write( " \n" ); document.write( " |