Question

what happens to the coefficient in Fprime(x) of F(x)=2tan(x)?

Answer 1

stays the same

\[F(x) = a f(x)\]
\[F'(x) = a f'(x)\]

Answer 2

Cool! so \[f \prime(x)=2\sec \times2\tan \] for \[f(x)=2\tan(x)\]?

Answer 3

hmm no derivative of tan = sec^2

Answer 4

http://en.wikipedia.org/wiki/List_of_trigonometric_identities#Calculus

Answer 5

oh I see, so it would be 2\[\sec (x)^{2}\]?

Answer 6

yes

Answer 7

great, thanks for the help cow!