document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=254407>Question 254407</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me <BR>\n" );
document.write( "get the integral of sin(x-sin7x)dx </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #186805 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=186805\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> please help me <BR>\n" );
document.write( "get the integral of sin(x-sin7x)dx<BR>\n" );
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document.write( "Expand the integrand using sin(a-b) = sin(a)cos(b)-cos(a)sin(b) to get:<BR>\n" );
document.write( "= int[sin(x)cos(7x)dx) - int[cos(x)sin(7x)dx]<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Note: d/dx cos(7x) = -7sin(7x)<BR>\n" );
document.write( "Note: d/dx sin(7x) = 7cos(7x)<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Can you integrate the above using substitution?<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );