document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1098779>Question 1098779</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the instantaneous rate of change of f(x)=x^2-(2/x)+4 at x=-1 <BR>\n" );
document.write( "A. -7 B. -4 C. 0 D. 4 E.7  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #713200 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=713200\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br>The instantaneous rate of change of a function f(x) at x=1 is the derivative of the function, evaluated at x=1.<br><BR>\n" );
document.write( "f(x) = x^2-(2/x)+4 = x^2 -2x^(-1)+4<BR>\n" );
document.write( "f'(x) = 2x+2x^(-2)<BR>\n" );
document.write( "f'(1) = 2+2 = 4 </SPAN>\n" );
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