document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1045299>Question 1045299</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Prove that:<BR>\n" );
document.write( "Sin^4x =1÷8 (3-4cos2x+cos4x) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #660755 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=660755\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Prove that:<BR>\n" );
document.write( "Sin^4x =1÷8 (3-4cos2x+cos4x)<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "At x = 0:<BR>\n" );
document.write( "0 = 1/(8*(3 - 4*1 + 1))<BR>\n" );
document.write( "0 = 1/(8*0)<BR>\n" );
document.write( "0 = 1/0<BR>\n" );
document.write( "Not an identity. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );