document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=878486>Question 878486</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Any and all help with this problem is GREATLY appreciated!! I think maybe the phase shift is left 3.14\r<BR>\n" );
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document.write( "What are the amplitude, period, phase shift, and midline of f(x) = 7 cos(2x + &#960;) &#8722; 3?<BR>\n" );
document.write( "amplitude = &#8722;3; period: &#960;; phase shift: x = negative pi over 2; midline: y = 3\r<BR>\n" );
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document.write( " amplitude: 7; period: &#960;; phase shift: x = negative pi over 2; midline: y = &#8722;3\r<BR>\n" );
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document.write( " amplitude: 7; period: 2&#960;; phase shift: x = pi over 2; midline: y = 3\r<BR>\n" );
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document.write( " amplitude: &#8722;3; period: 2&#960;; phase shift: x = pi over 2; midline: y = &#8722;3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #529968 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=529968\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f(x) = 7 cos(2x + &#960;) &#8722; 3 is in the form f(x) = A*cos(Bx - C) + D\r<BR>\n" );
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document.write( "where\r<BR>\n" );
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document.write( "A = 7<BR>\n" );
document.write( "B = 2<BR>\n" );
document.write( "C = -pi<BR>\n" );
document.write( "D = -3\r<BR>\n" );
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document.write( "Amplitude: |A| = |7| = 7\r<BR>\n" );
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document.write( "Period: T = 2pi/B = 2pi/2 = pi\r<BR>\n" );
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document.write( "Phase Shift: C/B = -pi/2 (so we're shifting left pi/2 units)\r<BR>\n" );
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document.write( "Midline: D = -3 ---> y = -3\r<BR>\n" );
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document.write( "-------------------------------------------------------\r<BR>\n" );
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document.write( "Put that all together and you get <font color=\"red\">choice B</font> as the final answer. </SPAN>\n" );
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