document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=910139>Question 910139</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How to find the amplitude and period.\r<BR>\n" );
document.write( "\n" );
document.write( "y = -4 cos 1/2 x\r<BR>\n" );
document.write( "\n" );
document.write( "help would be very appreciated, \r<BR>\n" );
document.write( "\n" );
document.write( "thank you! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #552266 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=552266\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How to find the amplitude and period.<BR>\n" );
document.write( "y = -4 cos 1/2 x <BR>\n" );
document.write( "***<BR>\n" );
document.write( "Equation for cos function: y=Acos(Bx-c), A=amplitude,period=2&#960;/B<BR>\n" );
document.write( "For given function:<BR>\n" );
document.write( "y=-4cos(x/2)<BR>\n" );
document.write( "amplitude=4<BR>\n" );
document.write( "B=1/2<BR>\n" );
document.write( "period=2&#960;/B=2&#960;/(1/2)=4&#960; </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );