document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=171377>Question 171377</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The power P, in watts, supplied to a circuit by a battery is given by the formula P=6I-0.5I^2, where I is the current in amperes. What is the approximate instantaneous rate of change of power when the current is 4 amperes? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #126550 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=126550\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The power P, in watts, supplied to a circuit by a battery is given by the formula P=6I-0.5I^2, where I is the current in amperes. What is the approximate instantaneous rate of change of power when the current is 4 amperes?<BR>\n" );
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document.write( "P=6I-0.5I^2<BR>\n" );
document.write( "dP/dI = 6 - I<BR>\n" );
document.write( "@I = 4, dP/dI = 2 Watts/Amp\r<BR>\n" );
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document.write( " </SPAN>\n" );
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