document.write( "Question 1032935: For what value(s) of d does the function f(x)=dx^2-6x+d have no zeros?\r
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Algebra.Com's Answer #647509 by robertb(5830) $\"\"$ $\"About$

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The discriminant $\"b%5E2+-+4ac+=+36+-+4%2Ad%2Ad+=+36+-+4d%5E2+%3C+0\"$ .\r
\n" ); document.write( "\n" ); document.write( "Hence $\"36+%3C+4d%5E2\"$ , or $\"9+%3C+d%5E2\"$ .\r
\n" ); document.write( "\n" ); document.write( "==> Therefore d is any number in ( $\"-infinity\"$ , -3) ∪ (3, $\"infinity\"$ ). \n" ); document.write( "

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