`d/(dx) (logtanx)`

What are the values of d/(dx) (cos x) and d/(dx) ( tan x)

d/(dx) log(logx) = ?

d/(dx) log(logx) = ?

(d)/(dx)[log_(a)x]

If (d)/(dx)[cot^(-1)(x+1)]+(d)/(dx)(tan^(-1)x)=(d)/(dx)(tan^(-1)u)," then "u=

(d)/(dx)|x|

d/(dx)(secx) is :

Let f(x) be a differentiable and let c a be a constant.Then cf(x) is also differentiable such that (d)/(dx){cf(x)}=c(d)/(dx)(f(x))

d/(dx)(sqrt(sinsqrtx))