document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=979853>Question 979853</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1. What is the derivative of f(x) = cos (x^4)?\r<BR>\n" );
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document.write( "2. Use implicit differentiation to find y’ of  x^2 + y^2 = 8  at (2,2) and at (-2,2)  (it may be helpful to look at the graph)\r<BR>\n" );
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document.write( "3. 2. What is the derivative of g(x) = (cos x)^4?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #601097 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=601097\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1. What is the derivative of f(x) = cos (x^4)?<BR>\n" );
document.write( "f'(x) = -sin(x^4)*4x^3<BR>\n" );
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document.write( "2. Use implicit differentiation to find y’ of  x^2 + y^2 = 8  at (2,2) and at (-2,2)  (it may be helpful to look at the graph)<BR>\n" );
document.write( "It's a circle.<BR>\n" );
document.write( "y' = -x/y at all points on a circle about the Origin.<BR>\n" );
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document.write( "3. 2. What is the derivative of g(x) = (cos x)^4?<BR>\n" );
document.write( "g(x) = cos^4(x)<BR>\n" );
document.write( "g'(x) = 4cos^3(x)*(-sin(x)) </SPAN>\n" );
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