document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=830369>Question 830369</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The high blood pressure of an obese individual can be modelled by the function p(t)=20sin3t+140, where p(t) represents the blood pressure, in millimetres of mercury (mmHg), and t is the time, in seconds. Determine the maximum and minimum blood pressure, in the time interval 0<t<0.75, and when they occur.\r<BR>\n" );
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document.write( "So far I solved that the maximum is 160, and the minimum is 120. What i don't understand is, what do they mean with the  0 < t < 0.75 part and how do you do it?\r<BR>\n" );
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document.write( "Any help is greatly appreciated as I'm interested In knowing how this problem works.\r<BR>\n" );
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document.write( "Thanks!\r<BR>\n" );
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document.write( "Lucy </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #500552 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=500552\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> p(t)=20sin(3t)+140, where p(t) represents the blood pressure, in millimetres of mercury (mmHg), and t is the time, in seconds. Determine the maximum and minimum blood pressure, in the time interval 0 So far I solved that the maximum is 160, and the minimum is 120. What i don't understand is, what do they mean with the 0 < t < 0.75 <BR>\n" );
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document.write( "Meaning: You are to find your answers in the interval 0<t<0.75<BR>\n" );
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document.write( "Max occurs when 3t = 90 ; t= 30<BR>\n" );
document.write( "p(30) = 20*sin(90) + 140 = 20*1 + 140 = 160<BR>\n" );
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document.write( "Min occurs when 3t = 180 : t = 60<BR>\n" );
document.write( "P(60) = 20*sin(3*60) + 140 = 20*0 + 140 = 140<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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