document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1205128>Question 1205128</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If the height of a sea gull is shown to follow the function h(t)=3sin(π/8t)+15 where t is seconds and h is in metres, estimate the instantaneous rate of change at t = 3. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #841773 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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/cgi-bin/show-face.mpl?user=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=841773\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "the instantaneous rate of change is a slope , so derivate  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%28t%29=3sin%28%28pi%2F8%29t%29%2B15 ALIGN=MIDDLE  ALT=\"h%28t%29=3sin%28%28pi%2F8%29t%29%2B15\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "using calculator, you get\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h ALIGN=MIDDLE  ALT=\"h\"   DISABLED_style= \"max-width:90%; height:auto;\" >'<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28t%29+=+%283%2F8%29pi%2Acos%28%28pi%2A+t%29%2F8%29 ALIGN=MIDDLE  ALT=\"%28t%29+=+%283%2F8%29pi%2Acos%28%28pi%2A+t%29%2F8%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "plug in <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t=3 ALIGN=MIDDLE  ALT=\"t=3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h ALIGN=MIDDLE  ALT=\"h\"   DISABLED_style= \"max-width:90%; height:auto;\" >'<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28t%29+=+%283%2F8%29pi%2Acos%28%28pi%2A3%29%2F8%29=0.45 ALIGN=MIDDLE  ALT=\"%28t%29+=+%283%2F8%29pi%2Acos%28%28pi%2A3%29%2F8%29=0.45\"   DISABLED_style= \"max-width:90%; height:auto;\" > => answer\r<BR>\n" );
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