Question

Find the derivative
f(x)=sec^8x.. I think it's 8 sec^7xtan^8x but I'm not sure

Answer 1

\[\frac{d}{dx}[\sec^8x]=8\sec^7x\frac{d}{dx}[\sec x]=8\sec^7x\sec x\tan x=8\sec^8x\tan x\]

Answer 2

for that last part, don't you mean 8sec^7xtanx

Answer 3

oh nvm