document.write( "Question 549768: Tell how to determine whether the system has a unique solution, and solve it with the Cramer method:\r
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document.write( "ax + by = c
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document.write( "dx + ey = f\r
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document.write( "The answer is: the system has a unique solution if:
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document.write( " delta = ae - bd not equal to 0
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document.write( "and the solution is:
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document.write( "x = (ce - bf) / (ae - bd)
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document.write( "y = (af - cd) / (ae - bd)\r
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document.write( "How do we explain that?\r
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Algebra.Com's Answer #358110 by Edwin McCravy(20060)![]() ![]() You can put this solution on YOUR website! \r\n" ); document.write( "\r\n" ); document.write( "ax + by = c\r\n" ); document.write( "dx + ey = f\r\n" ); document.write( "\r\n" ); document.write( "By Cramer's rule:\r\n" ); document.write( "\r\n" ); document.write( "Delta =\n" ); document.write( " |