document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=996944>Question 996944</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is the inverse of f(n)= -1-2n^3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #615290 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=615290\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> what is the inverse of f(n)= -1-2n^3 <BR>\n" );
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document.write( "1st:: Interchange x and y to get:<BR>\n" );
document.write( "x = -1 - 2y^2<BR>\n" );
document.write( "------<BR>\n" );
document.write( "2nd: Solve for \"y\"::<BR>\n" );
document.write( "2y^2 = -1-x<BR>\n" );
document.write( "----<BR>\n" );
document.write( "y^2 = -(x+1)/2<BR>\n" );
document.write( "----<BR>\n" );
document.write( "y = +/-sqrt[-(x+1)/2]<BR>\n" );
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document.write( "That is the inverse.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );