document.write( "Question 862767: Find the dy dx ,ify=sinx cosx \n" ); document.write( "
\n" ); document.write( "Hi\n" ); document.write( "y = sinx cosx \n" ); document.write( "Apply Product Rule\n" ); document.write( " \n" ); document.write( "Need to Know:\n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "