document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=83404>Question 83404</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Just about the time I thought I got it, here's a new one that I can't quite figure out how to proceed with.<BR>\n" );
document.write( "Find f^-1(x):<BR>\n" );
document.write( "f(x) = x^2 + 9 for x>= 0.<BR>\n" );
document.write( "Thanks in advance for any help on this! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #59920 by </B><A HREF=/tutors/aboutme.mpl?userid=uma><B>uma(370)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=uma><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=59920\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> given f(x) = x^2 + 9\r<BR>\n" );
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document.write( "Let y = x^2 + 9\r<BR>\n" );
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document.write( "To find f^-1 we first interchange x and y\r<BR>\n" );
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document.write( "==>  x = y^2 + 9\r<BR>\n" );
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document.write( "==>  x - 9 = y^2\r<BR>\n" );
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document.write( "==> sqrt(x - 9) = y\r<BR>\n" );
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document.write( "Thus f^-1 (x) = sqrt(x - 9) </SPAN>\n" );
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