A apak New Member Joined Oct 19, 2005 Messages 25 Gender Male HSC 2007 Apr 19, 2006 #1 differentiate xtanx the answer books answer is xsec²x + tanx but my answer is xsec²x. was it a error in the book? thanks
differentiate xtanx the answer books answer is xsec²x + tanx but my answer is xsec²x. was it a error in the book? thanks
tennille ... Joined Nov 2, 2003 Messages 3,539 Location Sydney Gender Female HSC 2004 Apr 19, 2006 #2 You use the product rule: u=x, v=tanx, u'=1, v'=sec²x d/dx=vu'+uv' d/dx=tanx*1+x*sec²x d/dx=tanx+xsec²x
You use the product rule: u=x, v=tanx, u'=1, v'=sec²x d/dx=vu'+uv' d/dx=tanx*1+x*sec²x d/dx=tanx+xsec²x
