document.write( "Question 1033705: The function f(x)=x^2-9x+14 has a maximum or minimum value? What is the value? \n" ); document.write( "

Algebra.Com's Answer #648388 by ikleyn(52786) $\"\"$ $\"About$

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document.write( "This quadratic function has the coefficient 1 at .\r\n" );
document.write( "Hence, the parabola is open upward.\r\n" );
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document.write( "Memorize it:\r\n" );
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document.write( "   If the coefficient at  is a positive number, then \r\n" );
document.write( "   the quadratic function is a parabola open upward and has a minimum.\r\n" );
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document.write( "   If, in opposite, the coefficient at  is a negative number, then \r\n" );
document.write( "   the quadratic function is a parabola open downward and has a maximum.\r\n" );
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