document.write( "Question 1117635: Hi,
\n" ); document.write( "Please help me to find the extreme values of: $\"f%28x%2Cy%29=x%5E2-y%5E2%2B3xy-x%2B2y%2B4\"$ , where the partial derivative of f with respect to x is zero and the partial derivative of f with respect to y is also zero.
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Algebra.Com's Answer #732755 by ikleyn(52776) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "1.  Take the derivative with respect to x and equate it to zero. You will get\r\n" );
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document.write( "    2x + 3y = 1.   (1)\r\n" );
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document.write( "2.  Take the derivative with respect to y and equate it to zero. You will get\r\n" );
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document.write( "    3x - 2y = -2.   (2)\r\n" );
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document.write( "3.  Solve the system of two linear equations (1) and (2) to get the answer\r\n" );
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document.write( "    x = ,  y = .\r\n" );
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\n" ); document.write( "\n" ); document.write( "You just are Calculus, correct ?\r
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\n" ); document.write( "\n" ); document.write( "Should I explain to the person taking Calculus, how to solve a 2x2-system of linear equations ?\r
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