document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=164428>Question 164428</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given f(x)=-sqrt(1-x), determine f^-1(x) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #121150 by </B><A HREF=/tutors/aboutme.mpl?userid=padmameesala><B>padmameesala(42)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=padmameesala><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=121150\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> let f(x)=y then x=f^-1(y)<BR>\n" );
document.write( "given f(x)= -sqrt(1-x)<BR>\n" );
document.write( "that is y = -sqrt(1-x)<BR>\n" );
document.write( "squaring on both sides we get, y^2 = 1-x<BR>\n" );
document.write( "x = 1-y^2 and x = f^-1(y)<BR>\n" );
document.write( "so f^-1(y) = 1-y^2<BR>\n" );
document.write( "hence f^-1(x) = 1-x^2 </SPAN>\n" );
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