document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1016418>Question 1016418</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find  f ’’(x)   if \r<BR>\n" );
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document.write( "     f(x) = 9 x^3  - 1 x^4  + 9\r<BR>\n" );
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document.write( "and evaluate f ’’(1). (Keep 2 decimal places)<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #632824 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=632824\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For<BR>\n" );
document.write( "f(x) = 9x^3 - x^4 + 9<BR>\n" );
document.write( "we have<BR>\n" );
document.write( "f'(x) = 27x^2 - 4x^3<BR>\n" );
document.write( "f''(x) = 54x - 12x^2<BR>\n" );
document.write( "f''(1) = 54 - 12 = 42 </SPAN>\n" );
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