Question

I know the f'''(x) of tan x is d^3/dx^3(tan(x)) = -2 (cos(2 x)-2) sec^4(x). can someone think of another way of writing it. I have multiple choice and my answer is not one of them?

Answer 1

Did you close it because you got it?

Answer 2

yes I did I worked it out thank you

Answer 3

Ok. Have fun and good job.