document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=980208>Question 980208</A>: <I><SPAN STYLE=\"word-break: break-all;\"> good day\r<BR>\n" );
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document.write( "sorry could not find Calculus in the list. It's differentiation.\r<BR>\n" );
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document.write( "Calculate the turning points\r<BR>\n" );
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document.write( "3x³ - 6x² -9 = 0\r<BR>\n" );
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document.write( "The answers are (0:9) and (4/3:-12.55)\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #601397 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=601397\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi there,<BR>\n" );
document.write( "y = 3x^3 - 6x^2 - 9 <BR>\n" );
document.write( "dy/dx = 9x^2 - 12x<BR>\n" );
document.write( "dy/dx = 0<BR>\n" );
document.write( "9x^2 - 12x = 0<BR>\n" );
document.write( "3x(3x - 4) = 0<BR>\n" );
document.write( "3x = 0 <BR>\n" );
document.write( "x = 0<BR>\n" );
document.write( "Substituting x = 0<BR>\n" );
document.write( "into f(x)<BR>\n" );
document.write( "3x^3 - 6x^2 - 9<BR>\n" );
document.write( "3(0)^3 - 6(0)^2 - 9<BR>\n" );
document.write( "= -9<BR>\n" );
document.write( "Turning point (0, -9)<BR>\n" );
document.write( ".......<BR>\n" );
document.write( "(3x - 4) = 0<BR>\n" );
document.write( "x = 4/3<BR>\n" );
document.write( "Substituting x = 4/3<BR>\n" );
document.write( "into f(x)<BR>\n" );
document.write( "3x^3 - 6x^2 - 9<BR>\n" );
document.write( "3(4/3)^3 - 6(4/3)^2 - 9<BR>\n" );
document.write( "- 12.55<BR>\n" );
document.write( "Turning point (4/3, -12.55)<BR>\n" );
document.write( "Hope this helps:-) </SPAN>\n" );
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