document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=115088>Question 115088</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Let f(x)=1-2x and find \r<BR>\n" );
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document.write( "a) f^-1 (x)   and   b) 1/f(x) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #83769 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=83769\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f(x)=1-2x <BR>\n" );
document.write( "a)<BR>\n" );
document.write( "y=1-2x<BR>\n" );
document.write( "x=1-2y switch x and y, then solve for y.<BR>\n" );
document.write( "-2y=x-1<BR>\n" );
document.write( "y=(x-1)/-2<BR>\n" );
document.write( "f^-1(x)=(1-x)/2<BR>\n" );
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document.write( "b)<BR>\n" );
document.write( "1/f(x)=1/(1-2x)<BR>\n" );
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document.write( "This proves that an inverse is not the same as a reciprocal.<BR>\n" );
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document.write( "Ed </SPAN>\n" );
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