document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1043750>Question 1043750</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if f(x)=(x-1)/(x+1),then f^-1 (1/t)=? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #658906 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=658906\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  if f(x)=(x-1)/(x+1),then f^-1 (1/t)=?<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "1st:: Interchange x and y to get:<BR>\n" );
document.write( "x = (y-1)/(y+1)<BR>\n" );
document.write( "2nd: Solve for \"y\"::<BR>\n" );
document.write( "xy+x = y-1<BR>\n" );
document.write( "xy-y = -(x+1)<BR>\n" );
document.write( "y(x-1) = -(x+1)<BR>\n" );
document.write( "y = -(x+1)/(x-1)<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Then::<BR>\n" );
document.write( "f^-1(1/t) = -(1/t + 1)/(1/t -1)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "f^-1(1/t) = -(1+t)/t / (1-t)/t<BR>\n" );
document.write( "----<BR>\n" );
document.write( "f^-1(1/t) = -(1+t)/(1-t)<BR>\n" );
document.write( "----------------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "------------- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );