document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=634750>Question 634750</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the inverse function of \r<BR>\n" );
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document.write( "f(x)= 3^(x-1) -2\r<BR>\n" );
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document.write( "I thought I would get <BR>\n" );
document.write( "x= 3^y-1 -2<BR>\n" );
document.write( "then x+2 =3^y-1<BR>\n" );
document.write( "then logs but I am confused </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #399888 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=399888\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the inverse function of <BR>\n" );
document.write( "f(x)= 3^(x-1) -2<BR>\n" );
document.write( "y= 3^(x-1) -2<BR>\n" );
document.write( "to find the inverse, interchange x and y, then solve for y<BR>\n" );
document.write( "..<BR>\n" );
document.write( "x=3^(y-1)-2<BR>\n" );
document.write( "x+2=3^(y-1)<BR>\n" );
document.write( "take log of both sides<BR>\n" );
document.write( "log(x+2)=(y-1)log3=ylog3-log3<BR>\n" );
document.write( "log(x+2)+log3=ylog3<BR>\n" );
document.write( "Inverse,y^-1=(log(x+2)+log3)/log3 </SPAN>\n" );
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