document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=173151>Question 173151</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I do find answers to this problem?<BR>\n" );
document.write( "y=-3cos(2x+pie)<BR>\n" );
document.write( "find the<BR>\n" );
document.write( "a.)amplitude<BR>\n" );
document.write( "b.)period<BR>\n" );
document.write( "c.)phase shift<BR>\n" );
document.write( "d.)graph the function<BR>\n" );
document.write( "Thank you much! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #128012 by </B><A HREF=/tutors/aboutme.mpl?userid=midwood_trail><B>midwood_trail(310)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=midwood_trail><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=128012\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The amplitude is the absolute value of the number in front of the trig function.<BR>\n" );
document.write( "So, amplitude = |-3| = 3\r<BR>\n" );
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document.write( "To find the period, we must see what happens to (2x + pi) as it varies between 0 and 2pi.\r<BR>\n" );
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document.write( "0 &#8804; 2x + pi &#8804; 2pi\r<BR>\n" );
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document.write( "0 &#8804; 2x &#8804; 2pi - pi\r<BR>\n" );
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document.write( "0 &#8804; 2x &#8804; pi\r<BR>\n" );
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document.write( "Do you see the 3 zeros on the left side?  This means we started with zero and ended with zero.  Thus, there is no phase shift.\r<BR>\n" );
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document.write( "To find the period, subtract 0 from pi.\r<BR>\n" );
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document.write( "Period = pi - 0\r<BR>\n" );
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document.write( "Perio = pi\r<BR>\n" );
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document.write( "To graph, use a graphing calculator or graph it by selecting several values for x and then simplifying to find values of y that together make points to be plotted on the xy-plane.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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