Monday

January 16, 2017
Posted by **Anonymous** on Saturday, July 28, 2012 at 9:23pm.

my friend did this : 3 tan ^4 (2x) d sec^ 2x (2x)= 6 tan ^4 (2x) d sec^2 (2x)

She says it's right but what confuses me is she deriving the 4 and made it a three? I did the problem like this:

tan^4 (2x)= 4 tan^3 (2x) d sec ^2 (2x)(2x)= 8 tan^3 (2x) d sec^2 (2x)

Can anyone explain this to me?

- calculus -
**Bosnian**, Sunday, July 29, 2012 at 1:09amGo on :

wolframalpha dot com

Whe page be open in rectangle type :

derivative tan^4(2x)

then click option =

After few seconds when you see result click option :

Show steps