Finding equation of tangent line(Calculus)

elghs2001 Says:

Sep 21, 2008 - This isn't that helpful

tomat0es Says:

Oct 12, 2009 - what the fuck is this.....

weiyi1123 Says:

Oct 17, 2009 - when you find the derivative of y=xsin2x, why you times 2 after cos2x?

Pandaraunt Says:

Feb 25, 2010 - because the argument 2x inside of the 2nd arguement of sin. because of this you have to apply the chain rule. because of this you must take the derivative of the "outside" arguement and multiply it by the derivative of the "inside":outside: sin = cosinside: 2x = 2(1) = 2then combine the arguements: 2cos2xso altogether with sum derivatives you gety=sin2x + 2xcos2x

mambofatale Says:

Mar 16, 2010 - Thanks so much for this video. Exams are tomorrow and the video presentation (as I'm taking online classes) is really helpful.  :D

burkem13 Says:

Mar 27, 2011 - it's actually really useful.

Abprat1 Says:

Dec 11, 2011 - to much info

ZZAKON Says:

Mar 14, 2012 - You could explain this with much easier steps, this is information "overflow" ...

mathprofessor7000 Says:

Mar 14, 2012 - So, don't look at it.