document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=970961>Question 970961</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A parabolic reflector is used by a sports broadcast engineer to amplify the conversations between football players on the field. If the reflector has the shape x = 5y2, where should the microphone be placed?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #593579 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=593579\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A parabolic reflector is used by a sports broadcast engineer to amplify the conversations between football players on the field. If the reflector has the shape x = 5y2, where should the microphone be placed?<BR>\n" );
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document.write( "x=5y^2<BR>\n" );
document.write( "y^2=(1/5)x<BR>\n" );
document.write( "this is an equation of a parabola that opens rightward with vertex at the origin<BR>\n" );
document.write( "Its basic equation: y^2=4px<BR>\n" );
document.write( "For given equation:<BR>\n" );
document.write( "vertex:(0,0)<BR>\n" );
document.write( "axis of symmetry: y=0<BR>\n" );
document.write( "4p=1/5<BR>\n" );
document.write( "p=1/20<BR>\n" );
document.write( "focal point:(1/20,0) (p-distance from vertex on the axis of symmetry) <BR>\n" );
document.write( "where should the microphone be placed? at the focal point (1/20, 0) </SPAN>\n" );
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