document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1027270>Question 1027270</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Let h and j be function whose first and second derivatives exist on interval I. Which of the following formula(s) is true. Explain.<BR>\n" );
document.write( "a. f g\" - f\" g = (f g' - f' g)'<BR>\n" );
document.write( "b. f g\" + f\" g= (fg)\" </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #642566 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=642566\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a.is true, because (fg'-f'g)' = f'g'+fg\" - (f\"g+f'g') = fg\"-f\"g.\r<BR>\n" );
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document.write( "b. is false, because (fg)\" =  (f'g +fg')' = f\"g + f'g' + f'g' + fg\" =  f\"g +<BR>\n" );
document.write( "2f'g' + fg\" </SPAN>\n" );
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