document.write( "Question 1187909: How do I determine the increasing and decreasing intervals of:
\n" ); document.write( "f(x)=4(x-4)^2-9 \n" ); document.write( "

Algebra.Com's Answer #818924 by ikleyn(52797) $\"\"$ $\"About$

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document.write( "This function represents a parabola opened upward, with the symmetry axis x= 4, which is vertical line,\r\n" );
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document.write( "parallel to y-axis.\r\n" );
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document.write( "Therefore, the function increasing interval is  [4,oo),\r\n" );
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document.write( "while     the function decreasing interval is  (-oo,4].\r\n" );
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