document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=861872>Question 861872</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve using derivatives - A dart is shot straight up from 1.5 metres above ground level. The distance (d), in metres, the dart is above the ground at time (t), in seconds is: \r<BR>\n" );
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document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=d%28t%29=+-4.9t%5E2+%2B+20t+%2B+1.5 ALIGN=MIDDLE  ALT=\"d%28t%29=+-4.9t%5E2+%2B+20t+%2B+1.5\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "1) What is the maximum height the dart reaches? I think this is 21.92 m<BR>\n" );
document.write( "2) for how many seconds is the dart in the air?  </SPAN>\n" );
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