document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=737181>Question 737181</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if (e^x+e^-x) / 2 = 1 then find e^x\r<BR>\n" );
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document.write( "Can you please me out? Thanks so much in advance:) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #450207 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=450207\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (e^x+e^-x) / 2 = 1\r<BR>\n" );
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document.write( "(e^x+1/e^x) / 2 = 1\r<BR>\n" );
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document.write( "((e^x)^2+1)/(2e^x) = 1\r<BR>\n" );
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document.write( "Let z = e^x\r<BR>\n" );
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document.write( "((e^x)^2+1)/(2e^x) = 1\r<BR>\n" );
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document.write( "(z^2+1)/(2z) = 1\r<BR>\n" );
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document.write( "z^2+1 = 2z\r<BR>\n" );
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document.write( "z^2-2z+1 = 0\r<BR>\n" );
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document.write( "(z-1)^2 = 0\r<BR>\n" );
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document.write( "z-1 = 0\r<BR>\n" );
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document.write( "z = 1\r<BR>\n" );
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document.write( "e^x = 1\r<BR>\n" );
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document.write( "Final Answer: e^x = 1 </SPAN>\n" );
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