Question

Anyone know why this is marked wrong?

Answer 1

for the second attachment its the first question

Answer 2

first one:

you forgot the x^7.

\[\frac{ d }{ dx }\tan(x^7) = \sec^2(x^7)(7x^6)\]

Answer 3

Ah I fixed the first, what is wrong with problem #2?

Answer 4

\[\frac{ d }{ dx }\cos(x^4 + 1) = -\sin(x^4 + 1)(4x^3)\]

\[\frac{ d }{ dx }f(g(x)) = f'(g(x))*g'(x)\]

Answer 5

omg I kept putting sign -_- lol not paying attention thanks!