document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=550102>Question 550102</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the graph of the trigonometric function y=2cos(1/2x) is shown below. Sorry but it won't allow me to copy and paste the graph so I hope you guys know how this graph looks like from the function.\r<BR>\n" );
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document.write( "My act answer key has f, i just want to know how it got that bcuz i have no clue so showing work would be very much appreciated.\r<BR>\n" );
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document.write( "the function is what?\r<BR>\n" );
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document.write( "f.even (that is, f(x)=f(-x) for all x)<BR>\n" );
document.write( "g.odd (that is, f(-x)=-f(x) for all x)<BR>\n" );
document.write( "h.neither even nor odd.<BR>\n" );
document.write( "j.the inverse of a cotangent function<BR>\n" );
document.write( "k.undfined at x=pi(3.14) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #358446 by </B><A HREF=/tutors/aboutme.mpl?userid=mathstutor458><B>mathstutor458(57)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mathstutor458><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=358446\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> we know that cos(-x)=cosx<BR>\n" );
document.write( "so,2cos(1/2x)=2cos(-1/2x) which is a even function<BR>\n" );
document.write( "so , f is correct </SPAN>\n" );
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